File Coverage

blib/lib/Class/Measure/Scientific/FX_992vb.pm
Criterion Covered Total %
statement 48 48 100.0
branch 4 4 100.0
condition 3 3 100.0
subroutine 15 15 100.0
pod 2 2 100.0
total 72 72 100.0


line stmt bran cond sub pod time code
1             # -*- cperl; cperl-indent-level: 4 -*-
2             # Copyright (C) 2020-2021, Roland van Ipenburg
3             package Class::Measure::Scientific::FX_992vb v0.0.6;
4 18     18   152353 use Moose;
  18         8710155  
  18         138  
5 18     18   150003 use MooseX::NonMoose;
  18         20121  
  18         69  
6 18     18   1290675 use List::MoreUtils qw(uniq);
  18         52  
  18         186  
7             extends
8             'Class::Measure' => { '-version' => 0.08 },
9             'Moose::Object';
10              
11 18     18   31107 use Log::Log4perl qw(:easy get_logger);
  18         871593  
  18         116  
12              
13 18     18   15732 use utf8;
  18         51  
  18         150  
14 18     18   950 use 5.016000;
  18         89  
15              
16 18     18   11655 use Readonly;
  18         71447  
  18         31766  
17             ## no critic (ProhibitCallsToUnexportedSubs)
18             Readonly::Scalar my $EMPTY => q{};
19             Readonly::Scalar my $SEP => q{,};
20             Readonly::Scalar my $PREFIX => q{C};
21             Readonly::Scalar my $CODE => q{CODE};
22              
23             Readonly::Scalar my $AM2 => q{Am2};
24             Readonly::Scalar my $AM2PJS => q{Am2pJs};
25             Readonly::Scalar my $AMPERE => q{A};
26             Readonly::Scalar my $APM => q{Apm};
27             Readonly::Scalar my $BQ => q{Bq};
28             Readonly::Scalar my $CDPM2 => q{cdpm2};
29             Readonly::Scalar my $CELSIUS => q{C};
30             Readonly::Scalar my $CM => q{Cm};
31             Readonly::Scalar my $CM2PV => q{Cm2pV};
32             Readonly::Scalar my $COULOMB => q{C};
33             Readonly::Scalar my $CPKG => q{Cpkg};
34             Readonly::Scalar my $CPM => q{Cpmol};
35             Readonly::Scalar my $CPM2 => q{Cpm2};
36             Readonly::Scalar my $FAHRENHEIT => q{F};
37             Readonly::Scalar my $FARAD => q{f};
38             Readonly::Scalar my $FPM => q{Fpm};
39             Readonly::Scalar my $HPM => q{Hpm};
40             Readonly::Scalar my $JOULE => q{J};
41             Readonly::Scalar my $JPK => q{JpK};
42             Readonly::Scalar my $JPKG => q{Jpkg};
43             Readonly::Scalar my $JPKGK => q{JpkgK};
44             Readonly::Scalar my $JPMOLK => q{JpmolK};
45             Readonly::Scalar my $JS => q{Js};
46             Readonly::Scalar my $KELVIN => q{K};
47             Readonly::Scalar my $KG => q{kg};
48             Readonly::Scalar my $KGPM => q{kgpm};
49             Readonly::Scalar my $M2 => q{m2};
50             Readonly::Scalar my $M3 => q{m3};
51             Readonly::Scalar my $M3PMOL => q{m3pmol};
52             Readonly::Scalar my $METER => q{m};
53             Readonly::Scalar my $MK => q{mK};
54             Readonly::Scalar my $MPS => q{mps};
55             Readonly::Scalar my $MPS2 => q{mps2};
56             Readonly::Scalar my $NEWTON => q{N};
57             Readonly::Scalar my $NM2PKG2 => q{Nm2pkg2};
58             Readonly::Scalar my $PA => q{pa};
59             Readonly::Scalar my $PM => q{pm};
60             Readonly::Scalar my $PMOL => q{pmol};
61             Readonly::Scalar my $RAD => q{rad};
62             Readonly::Scalar my $SECOND => q{s};
63             Readonly::Scalar my $SKIP => q{};
64             Readonly::Scalar my $VOLT => q{V};
65             Readonly::Scalar my $VPM => q{Vpm};
66             Readonly::Scalar my $WATT => q{W};
67             Readonly::Scalar my $WB => q{Wb};
68             Readonly::Scalar my $WM2 => q{Wm2};
69             Readonly::Scalar my $WPM2K4 => q{Wpm2K4};
70             Readonly::Hash my %IDX => (
71             'idx' => 0,
72             'unit' => 1,
73             'multiplier' => 3,
74             'base' => 4,
75             );
76             Readonly::Hash my %TYPES => (
77             'acceleration' => $MPS2,
78             'angle' => $RAD,
79             'area' => $M2,
80             'charge' => $COULOMB,
81             'displacement' => $CPM2,
82             'duration' => $SECOND,
83             'electrolysis' => $CPM,
84             'electromagnetic' => $JS,
85             'energy' => $JOULE,
86             'entropy' => $JPK,
87             'field_equation' => $NM2PKG2,
88             'flux' => $WB,
89             'force' => $NEWTON,
90             'gas' => $JPMOLK,
91             'gyromagnetic' => $AM2PJS,
92             'heat_capacity' => $JPKGK,
93             'isotropic' => $CM2PV,
94             'length' => $METER,
95             'linear_density' => $KGPM,
96             'luminance' => $CDPM2,
97             'magnetic' => $AM2,
98             'mass' => $KG,
99             'mixture' => $M3PMOL,
100             'power' => $WATT,
101             'pressure' => $PA,
102             'proportionality' => $PMOL,
103             'radiation' => $CPKG,
104             'radioactive' => $BQ,
105             'spectroscopic' => $PM,
106             'speed' => $MPS,
107             'susceptibility' => $CM,
108             'temperature' => $KELVIN,
109             'thermodynamic' => $JPKG,
110             'volume' => $M3,
111             'wavelength' => $WM2,
112             'wavenumber' => $MK,
113             );
114             Readonly::Array my @CONST => (
115             [ 1, q{deg}, q{degree (angle)}, 0.017_453_292_51, $RAD ],
116             [ 2, q{minute}, q{minute (angle)}, 2.908_882_086_66e-4, $RAD ],
117             [ 3, q{second}, q{second (angle)}, 4.848_136_811e-6, $RAD ],
118             [ 4, q{AU}, q{astronomical unit}, 149_597_870_000, $METER ],
119             [ 5, q{g}, q{acceleration of free fall}, 9.806_65, $MPS2 ],
120             [ 6, q{grade}, q{grade}, 0.015_707_963_26, $RAD ],
121             [ 7, q{kn}, q{knot}, 1852 / 3600, $MPS ],
122             [ 8, q{ly}, q{light year}, 9.460_53e15, $METER ],
123             [ 9, q{nmi}, q{nautical mile}, 1852, $METER ],
124             [ 10, q{pc}, q{parsec}, 3.085_677_57e16, $METER ],
125             [ 11, q{year}, q{tropical year}, 31_556_926, $SECOND ],
126             [ 12, q{acre}, q{acre}, 4_046.856_422_4, $M2 ],
127             [ 13, q{bbl}, q{barrel for petroleum}, 0.158_987_294_92, $M3 ],
128             [ 14, q{dry_barrel}, q{dry barrel}, 0.115_627_123_58, $M3 ],
129             [ 15, q{bushel_uk}, q{bushel}, 0.036_368_794_35, $M3 ],
130             [ 16, q{bu}, q{bushel}, 0.035_239_070_16, $M3 ],
131             [ 17, q{chain}, q{chain (surveyors)}, 79_200 / 3_937, $METER ],
132             [ 18, q{cu}, q{US cup}, 2.365_882_365e-4, $M3 ],
133             [ 19, q{pt_dry}, q{dry pint}, 5.506_104_713_58e-4, $M3 ],
134             [ 20, q{fathom}, q{fathom (surveyors)}, 7200 / 3937, $METER ],
135             [ 21, q{fbm}, q{board foot}, 2.359_737_216e-3, $M3 ],
136             [ 22, q{floz_uk}, q{fluid ounce UK}, 2.841_312_059_3e-5, $M3 ],
137             [ 23, q{floz_us}, q{fluid ounce US}, 2.957_352_956_25e-5, $M3 ],
138             [ 24, q{ft}, q{foot}, 0.304_8, $METER ],
139             [ 25, q{ft_us}, q{foot (surveyors = US)}, 1200 / 3937, $METER ],
140             [ 26, q{gal_uk}, q{gallon (United Kingdom)}, 4.546_099_294_88e-3, $M3 ],
141             [ 27, q{gal_us}, q{gallon (United States)}, 3.785_411_784e-3, $M3 ],
142             [ 28, q{in}, q{inch}, 0.025_4, $METER ],
143             [ 29, q{mil}, q{mil}, 2.54e-5, $METER ],
144             [ 30, q{mile}, q{mile (international)}, 1_609.344, $METER ],
145             [ 31, q{sm}, q{US statute mile}, 6_336_000 / 3_937, $METER ],
146             [ 32, q{mph}, q{miles per hour}, 0.447_04, $MPS ],
147             [ 33, q{pk}, q{peck}, 8.809_767_541_72e-3, $M3 ],
148             [ 34, q{pt_uk}, q{pint}, 5.682_624_118_6e-4, $M3 ],
149             [ 35, q{pt_us}, q{liquid pint}, 4.731_764_73e-4, $M3 ],
150             [ 36, q{tbsp}, q{tablespoon}, 1.478_676_478_13e-5, $M3 ],
151             [ 37, q{tsp}, q{teaspoon}, 4.928_921_593_75e-6, $M3 ],
152             [ 38, q{yd}, q{yard}, 0.914_4, $METER ],
153             [ 39, q{yd_us}, q{US yard}, 3_600 / 3_937, $METER ],
154             [ 40, q{at}, q{technical atmosphere}, 98_066.5, $PA ],
155             [ 41, q{atm}, q{standard atmosphere}, 101_325, $PA ],
156             [ 42, q{ct}, q{metric carat}, 2e-4, $KG ],
157             [ 43, q{D}, q{denier}, 50 / 450_000_000, $KGPM ],
158             [ 44, q{G}, q{gravitational constant}, 6.672e-11, $NM2PKG2 ],
159             [ 45, q{kgf}, q{kilogramforce}, 9.806_65, $NEWTON ],
160             [ 46, q{mH2O}, q{meter of water}, 9_806.65, $PA ],
161             [ 47, q{mmHg}, q{mm of mercury}, 101_325 / 760, $PA ],
162             [ 48, q{PS}, q{metric horsepower}, 735.49875, $WATT ],
163             [ 49, q{Torr}, q{Torr}, 101_325 / 760, $PA ],
164             [ 50, q{cwt_uk}, q{hundred-weight}, 50.802_345_44, $KG ],
165             [ 51, q{cwt_us}, q{hundred-weight}, 45.359_237, $KG ],
166             [ 52, q{ftlbf}, q{foot pound-force}, 1.355_817_948_33, $JOULE ],
167             [ 53, q{ftH2O}, q{foot of water}, 2_989.066_92, $PA ],
168             [ 54, q{gr}, q{grain}, 6.479_891e-5, $KG ],
169             [ 55, q{hp}, q{horsepower}, 745.699_871_582, $JOULE ],
170             [ 56, q{inH2O}, q{inch of water}, 249.088_91, $PA ],
171             [ 57, q{inHg}, q{inch of mercury}, 3_386.388_157_89, $PA ],
172             [ 58, q{lb}, q{pound}, 0.453_592_37, $KG ],
173             [ 59, q{lbf}, q{pound-force}, 4.448_221_615_26, $NEWTON ],
174             [ 60, q{lbt}, q{troy pound}, 0.373_241_721_6, $KG ],
175             [ 61, q{oz}, q{ounce}, 0.028_349_523_12, $KG ],
176             [ 62, q{ozt}, q{troy ounce}, 0.031_103_476_8, $KG ],
177             [ 63, q{pdl}, q{poundal}, 0.138_254_954_37, $NEWTON ],
178             [ 64, q{psi}, q{pounds per square inch}, 6_894.757_293_17, $PA ],
179             [ 65, q{slug}, q{slug}, 14.593_902_937_2, $KG ],
180             [ 66, q{ton_uk}, q{long ton}, 1_016.046_908_8, $KG ],
181             [ 67, q{ton_us}, q{short ton}, 907.184_74, $KG ],
182             [ 68, q{zC}, q{zero Celsius}, 273.15, $SKIP ],
183             [ 69, q{cal15}, q{15 degree calorie}, 4.185_5, $JOULE ],
184             [ 70, q{calit}, q{I.T. calorie}, 4.186_8, $JOULE ],
185             [ 71, q{calth}, q{thermo chemical calorie}, 4.184, $JOULE ],
186             [ 72, q{FK}, q{degree Fahrenheit}, 5 / 9, $SKIP ],
187             [ 73, q{zF}, q{zero Fahrenheit in Celsius}, -160 / 9, $SKIP ],
188             [ 74, q{BTU}, q{British thermal unit}, 1_055.055_852_62, $JOULE ],
189             [ 75, q{BTUlbR}, q{specific heat capacity}, 4_186.8, $JPKGK ],
190             [ 76, q{BTUh}, q{Btu per hour}, 0.293_071_070_17, $WATT ],
191             [ 77, q{BTUlb}, q{specific internal enegry}, 2_326, $JPKG ],
192             [ 78, q{therm}, q{therm}, 105_505_585.262, $JOULE ],
193             [ 79, q{eps0}, q{permittivity of vacuum}, 8.854_187_817_62e-12, $FPM ],
194             [ 80, q{mu0}, q{permeability of vacuum}, 1.256_637_061_44e-6, $HPM ],
195             [ 81, q{Cs}, q{G. electric capacitance}, 1.112_650_056_05e-12, $FARAD ],
196             [ 82, q{Ds}, q{G. electric flux density}, 2.654_418_729_44e-7, $CPM2 ],
197             [ 83, q{Es}, q{G. electric field strength}, 29_979.245_8, $VPM ],
198             [ 84, q{Is}, q{G. electric current}, 3.33564095198e-10, $AMPERE ],
199             [ 85, q{Oe}, q{Hs, G. magnetic field strength}, 79.5774715459, $APM ],
200             [ 86, q{Ps}, q{G. electric polarization}, 3.335_640_951_98e-6, $CPM2 ],
201             [ 87, q{Qs}, q{G. electric charge}, 3.335_640_951_98e-10, $COULOMB ],
202             [ 88, q{Vs}, q{G. electric potential}, 299.792458, $VOLT ],
203             [ 89, q{sigma}, q{Stefan-Boltzmann constant}, 5.67032e-8, $WPM2K4 ],
204             [ 90, q{c}, q{speed of light}, 299_792_458, $MPS ],
205             [ 91, q{c1}, q{first radiation constant}, 3.741_832e-16, $WM2 ],
206             [ 92, q{c2}, q{second radiation constant}, 0.014_387_86, $MK ],
207             [ 93, q{lam}, q{lambert}, 3_183.098_861_84, $CDPM2 ],
208             [ 94, q{flam}, q{footlambert}, 3.426_259_099_64, $CDPM2 ],
209             [ 95, q{dB}, q{decibel level difference}, 0.115_129_254_65, $SKIP ],
210             [ 96, q{Np}, q{neper level difference}, 8.685_889_638_07, $SKIP ],
211             [ 97, q{e}, q{elementary charge}, 1.602_189_2e-19, $COULOMB ],
212             [ 98, q{f}, q{Faraday constant}, 96_484.56, $CPM ],
213             [ 99, q{k}, q{Boltzmann constant}, 1.380_662e-23, $JPK ],
214             [ 100, q{Na}, q{Avogadro constant}, 6.022_045e23, $PMOL ],
215             [ 101, q{R}, q{molar gas constant}, 8.314_41, $JPMOLK ],
216             [ 102, q{Vm}, q{molar volume}, 0.02241383, $M3PMOL ],
217             [
218             103, q{alpha}, q{G. el. polarizability of molecule},
219             1.11265005605e-16, $CM2PV,
220             ],
221             [ 104, q{p}, q{mu, G. el. dipole of molecule}, 3.33564095198e-12, $CM ],
222             [ 105, q{a}, q{fine-structure constant}, 7.297_350_6e-3, $SKIP ],
223             [ 106, q{gammap}, q{gyromagnetic ratio of proton}, 267_519_870, $AM2PJS ],
224             [
225             107, q{gammapalt}, q{gyromagnetic ratio of proton in water},
226             267_513_010, $AM2PJS,
227             ],
228             [ 108, q{lambdacn}, q{Compton wavelength n}, 1.319_590_9e-15, $METER ],
229             [ 109, q{lambdacp}, q{Compton wavelength p}, 1.321_409_9e-15, $METER ],
230             [ 110, q{muB}, q{Bohr magneton}, 9.274_078e-24, $AM2 ],
231             [ 111, q{mue}, q{m. moment of electron}, 9.284_770_1e-24, $AM2 ],
232             [ 112, q{muN}, q{nuclear magneton}, 5.050_824e-27, $AM2 ],
233             [ 113, q{mup}, q{m. moment of proton}, 1.410_607_61e-26, $AM2 ],
234             [ 114, q{a0}, q{Bohr radius}, 5.291_770_6e-11, $METER ],
235             [ 115, q{eh}, q{Hartree energy}, 4.359_81e-18, $JOULE ],
236             [ 116, q{ev}, q{electronvolt}, 1.602_189_2e-19, $JOULE ],
237             [ 117, q{h}, q{Planck constant}, 6.626176e-34, $JS ],
238             [ 118, q{hbar}, q{Planck constant per 2 pi}, 1.0545887e-34, $JS ],
239             [ 119, q{m1h}, q{mass of hydrogen atom}, 1.673_559_4e-27, $KG ],
240             [ 120, q{me}, q{rest mass of electron}, 9.109_534e-31, $KG ],
241             [ 121, q{mn}, q{rest mass of neutron}, 1.674_954_3e-27, $KG ],
242             [ 122, q{mp}, q{rest mass of proton}, 1.672_648_5e-27, $KG ],
243             [ 123, q{Rinf}, q{Rydberg constant}, 10_973_731.77, $PM ],
244             [ 124, q{re}, q{electron radius}, 2.817_938e-15, $METER ],
245             [ 125, q{u}, q{atomic mass unit}, 1.660_565_5e-27, $KG ],
246             [ 126, q{Ci}, q{curie}, 37_000_000_000, $BQ ],
247             [ 127, q{R}, q{rontgen}, 2.58e-4, $CPKG ],
248             [ 128, q{phi0}, q{fluxiod quantum}, 2.067_850_6e-15, $WB ],
249             [
250             undef, $CELSIUS,
251             q{Celsius to Kelvin},
252             sub {
253             return shift() + Class::Measure::Scientific::FX_992vb::zC();
254             },
255             $KELVIN,
256             ],
257             [
258             undef,
259             $KELVIN,
260             q{Kelvin to Celsius},
261             sub {
262             return shift() - Class::Measure::Scientific::FX_992vb::zC();
263             },
264             $CELSIUS,
265             ],
266             [
267             undef,
268             $FAHRENHEIT,
269             q{Fahrenheit to Kelvin},
270             sub {
271             return Class::Measure::Scientific::FX_992vb::zC() +
272             ( ( shift() * Class::Measure::Scientific::FX_992vb::FK() ) +
273             Class::Measure::Scientific::FX_992vb::zF() );
274             },
275             $KELVIN,
276             ],
277             [
278             undef,
279             $KELVIN,
280             q{Kelvin to Fahrenheit},
281             sub {
282             return (
283             shift() - (
284             Class::Measure::Scientific::FX_992vb::zF() +
285             Class::Measure::Scientific::FX_992vb::zC()
286             )
287             ) /
288             Class::Measure::Scientific::FX_992vb::FK();
289             },
290             $FAHRENHEIT,
291             ],
292             );
293             Readonly::Scalar my $MAX => length grep { $_[ $IDX{'idx'} ] } @CONST;
294             Readonly::Hash my %LOG => (
295             'UNITS' => q{Registering units '%s'},
296             'CONST' => q{Contant %d is not available, there are only 128 constants},
297             );
298             ## use critic
299              
300             Log::Log4perl->easy_init($ERROR);
301             my $log = get_logger();
302              
303             for my $type ( keys %TYPES ) {
304              
305             sub _nom {
306 648     648   1163 my $label = lc shift;
307 648         1234 $label =~ s{\s+}{_}msx;
308 648         2315 return $label;
309             }
310             ## no critic (ProhibitNoStrict)
311 18     18   195 no strict q{refs};
  18         63  
  18         2974  
312             ## use critic
313             *{ _nom($type) } = sub {
314 77     77   103241 new(@_);
315             };
316             }
317              
318             my @units = ();
319             my @convs = ();
320             for my $const (@CONST) {
321             my $base = ${$const}[ $IDX{'base'} ];
322             my $unit = ${$const}[ $IDX{'unit'} ];
323             my $multiplier = ${$const}[ $IDX{'multiplier'} ];
324             if ( $base ne $SKIP ) {
325             push @convs,
326             (
327             ( ref $multiplier eq $CODE )
328             ? ( $unit => $base, $multiplier )
329             : ( $unit => $multiplier, $base )
330             );
331             push @units, ( $unit, $base );
332             }
333             else {
334             ## no critic (ProhibitNoStrict)
335 18     18   149 no strict q{refs};
  18         46  
  18         5946  
336             ## use critic
337             *{$unit} = sub {
338 70     70   295 return $multiplier;
339             };
340             }
341             }
342              
343             sub CONST {
344 6     6 1 3277 my $idx = shift;
345 6         14 $idx--;
346 6 100 100     146 if ( exists $CONST[$idx] && defined $CONST[$idx][ $IDX{'idx'} ] ) {
347 3         99 return $CONST[$idx][ $IDX{'multiplier'} ];
348             }
349             else {
350 3         101 $log->error( sprintf $LOG{'CONST'}, $idx + 1 );
351 3         1259 return;
352             }
353             }
354              
355             sub new {
356 79     79 1 2118 my ( $class, $amount, $unit ) = @_;
357              
358 79         7514 @units = uniq(@units);
359              
360             # Register in the constructor because Class::Measure doesn't allow
361             # inheritance of registered data:
362 79         2094 $log->debug( sprintf $LOG{'UNITS'}, join $SEP, @units );
363 79 100       1981 if ( 0 == $class->units() ) {
364 17         528 $class->reg_units(@units);
365 17         35182 $class->reg_convs(@convs);
366             }
367              
368 79         51413 my $measure = $class->SUPER::new( $amount, $unit );
369             ## no critic (ProhibitHashBarewords)
370 79         1444 return $class->meta->new_object( __INSTANCE__ => $measure, $amount, $unit );
371             ## use critic
372             }
373              
374 18     18   194 no Moose;
  18         60  
  18         197  
375             __PACKAGE__->meta->make_immutable( 'inline_constructor' => 0 );
376              
377             1;
378              
379             __END__
380              
381             =begin stopwords
382              
383             Ipenburg JIS merchantability fx gradian poundal torr pdl inHg thermo ps BTUlbR
384             BTUlb muB magneton gammap gyromagnetic Rinf weber wavenumber luminance lambert
385             footlambert candela mol Vm polarizability Ds Neper thermochemical Bitbucket
386              
387             =end stopwords
388              
389             =head1 NAME
390              
391             Class::Measure::Scientific::FX_992vb - units of measurement like the CASIO fx-992vb
392              
393             =head1 VERSION
394              
395             This document describes Class::Measure::Scientific::FX_992vb C<v0.0.6>.
396              
397             =head1 SYNOPSIS
398              
399             use Class::Measure::Scientific::FX_992vb;
400             $m = Class::Measure::Scientific::FX_992vb->mass(1, 'u');
401             print $m->kg();
402              
403             =head1 DESCRIPTION
404              
405             Create, compare and convert units of measurement as the CASIO fx-992vb. This
406             has little to do with the CASIO fx-992vb itself, the hardware just provides a
407             stable curated scope of range and precision for the 128 constants used in this
408             module so it won't be endlessly updated with more units or more precise
409             constants.
410              
411             =head1 SUBROUTINES/METHODS
412              
413             =over 4
414              
415             =item C<Class::Measure::Scientific::FX_992vb-E<gt>new(1, 'inHg')>
416              
417             Constructs a new Class::Measure::Scientific::FX_992vb object. This is the same
418             type of object as the following list of specific objects, but the specific
419             objects might in the future be able to handle conflicting aliases for units
420             which the generic constructor can't.
421              
422             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>volume(1, 'cu');>
423              
424             Construct a L<volume|https://en.wikipedia.org/wiki/Volume> object. Unit must
425             be one of C<m3> for L<cubic meter|https://en.wikipedia.org/wiki/Cubic_metre>,
426             C<bbl> for L<barrel|https://en.wikipedia.org/wiki/Barrel_(unit)>,
427             C<dry_barrel> for L<dry barrel|https://en.wikipedia.org/wiki/Barrel_(unit)>,
428             C<bushel_uk> for L<UK bushel|https://en.wikipedia.org/wiki/Bushel>, C<bu> for
429             L<bushel|https://en.wikipedia.org/wiki/Bushel>, C<cu> for
430             L<cup|https://en.wikipedia.org/wiki/Cup_(unit)>, C<pt_dry> for L<dry
431             pint|https://en.wikipedia.org/wiki/Dry_measure>, C<fbm> for L<board
432             foot|https://en.wikipedia.org/wiki/Board_foot>, C<floz_uk> for L<UK fluid
433             ounce|https://en.wikipedia.org/wiki/Fluid_ounce>, C<floz_us> for L<US fluid
434             ounce|https://en.wikipedia.org/wiki/Fluid_ounce>, C<gal_uk> for L<UK
435             gallon|https://en.wikipedia.org/wiki/Gallon>, C<gal_us> for L<US
436             gallon|https://en.wikipedia.org/wiki/Gallon>, C<pk> for
437             L<peck|https://en.wikipedia.org/wiki/Peck>, C<pt_uk> for
438             L<pint|https://en.wikipedia.org/wiki/Pint>, C<pt_us> for L<liquid
439             pint|https://en.wikipedia.org/wiki/Pint>, C<tbsp> for
440             L<tablespoon|https://en.wikipedia.org/wiki/Tablespoon> or C<tsp> for
441             L<teaspoon|https://en.wikipedia.org/wiki/Teaspoon>.
442              
443             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>area(1, 'acre');>
444              
445             Construct an L<area|https://en.wikipedia.org/wiki/Area> object. Unit must be
446             C<m2> for L<square meter|https://en.wikipedia.org/wiki/Square_metre> or
447             C<acre> for L<acre|https://en.wikipedia.org/wiki/Acre>.
448              
449             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>length(1, 'fathom');>
450              
451             Construct a L<length|https://en.wikipedia.org/wiki/Length> object. Unit must
452             be one of C<m> for L<meter|https://en.wikipedia.org/wiki/Metre>, C<AU> for
453             L<astronomical unit|https://en.wikipedia.org/wiki/Astronomical_unit>, C<ly>
454             for L<light-year|https://en.wikipedia.org/wiki/Light-year>, C<nmi> for
455             L<Nautical mile|https://en.wikipedia.org/wiki/Nautical_mile>, C<pc> for
456             L<parsec|https://en.wikipedia.org/wiki/Parsec>, C<chain> for
457             L<chain|https://en.wikipedia.org/wiki/Chain_(unit)>, C<fathom> for
458             L<fathom|https://en.wikipedia.org/wiki/Fathom>, C<ft> for
459             L<foot|https://en.wikipedia.org/wiki/Foot_(unit)>, C<ft_us> for US surveyors
460             foot, C<in> for L<inch|https://en.wikipedia.org/wiki/Inch>, C<mil> for L<mil
461             (1/1000th inch)|https://en.wikipedia.org/wiki/Thousandth_of_an_inch>, C<mile>
462             for L<mile|https://en.wikipedia.org/wiki/Mile>, C<sm> for US statute miles,
463             C<yd> for L<yard|https://en.wikipedia.org/wiki/Yard>, C<yd_us> for US yard,
464             C<lambdacn> for L<Compton
465             wavelength|https://en.wikipedia.org/wiki/Compton_wavelength> of neutron,
466             C<lambdacp> for L<Compton
467             wavelength|https://en.wikipedia.org/wiki/Compton_wavelength> of proton, C<a0>
468             for L<Bohr radius|https://en.wikipedia.org/wiki/Bohr_radius> or C<re> for
469             L<electron radius|https://en.wikipedia.org/wiki/Classical_electron_radius>.
470              
471             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>duration(1, 'year');>
472              
473             Construct a duration object. Unit must be C<s> for
474             L<seconds|https://en.wikipedia.org/wiki/Second> or C<year> for L<tropical
475             year|https://en.wikipedia.org/wiki/Tropical_year>.
476              
477             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>speed(1, 'c');>
478              
479             Construct a L<speed|https://en.wikipedia.org/wiki/Speed> object. Unit must be
480             one of C<mps> for L<meter per
481             second|https://en.wikipedia.org/wiki/Metre_per_second>, C<mph> for L<miles per
482             hour|https://en.wikipedia.org/wiki/Miles_per_hour>, C<kn> for
483             L<knot|https://en.wikipedia.org/wiki/Knot_(unit)> or C<c> for the L<speed of
484             light|https://en.wikipedia.org/wiki/Speed_of_light>.
485              
486             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>acceleration(1, 'g');>
487              
488             Construct an L<acceleration|https://en.wikipedia.org/wiki/Acceleration>
489             object. Unit must be one of C<g> for L<acceleration of free
490             fall|https://en.wikipedia.org/wiki/Gravitational_acceleration> or C<mps2> for
491             L<meters per second
492             squared|https://en.wikipedia.org/wiki/Metre_per_second_squared>.
493              
494             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>angle(90, 'deg');>
495              
496             Construct an L<angle|https://en.wikipedia.org/wiki/Angle> object. Unit must be
497             one of C<rad> for L<radian|https://en.wikipedia.org/wiki/Radian>, C<deg> for
498             L<degree|https://en.wikipedia.org/wiki/Degree_(angle)>, C<minute> for L<minute
499             of arc|https://en.wikipedia.org/wiki/Minute_and_second_of_arc>, C<second> for
500             L<second of arc|https://en.wikipedia.org/wiki/Minute_and_second_of_arc> or
501             C<grade> for L<gradian|https://en.wikipedia.org/wiki/Gradian>.
502              
503             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>mass(1, 'u');>
504              
505             Construct a L<mass|https://en.wikipedia.org/wiki/Mass> object. Unit must be
506             one of C<kg> for L<kilogram|https://en.wikipedia.org/wiki/Kilogram>, C<ct> for
507             L<metric carat|https://en.wikipedia.org/wiki/Carat_(mass)>, C<cwt_uk> for L<UK
508             hundredweight|https://en.wikipedia.org/wiki/Hundredweight>, C<cwt_us> for US
509             hundred weight, C<gr> for L<grain|https://en.wikipedia.org/wiki/Grain_(unit)>,
510             C<lb> for L<pound|https://en.wikipedia.org/wiki/Pound_(mass)>, C<lbt> for troy
511             pound, C<oz> for L<ounce|https://en.wikipedia.org/wiki/Ounce>, C<ozt> for
512             L<troy ounce|https://en.wikipedia.org/wiki/Troy_weight>, C<slug> for
513             L<slug|https://en.wikipedia.org/wiki/Slug_(unit)>, C<ton_uk> for L<long
514             ton|https://en.wikipedia.org/wiki/Long_ton>, C<ton_us> for L<short
515             ton|https://en.wikipedia.org/wiki/Short_ton>, C<m1h> for L<mass of hydrogen
516             atom|https://en.wikipedia.org/wiki/Hydrogen_atom>, C<me> for mass of
517             L<electron|https://en.wikipedia.org/wiki/Electron>, C<mn> for mass of
518             L<neutron|https://en.wikipedia.org/wiki/Neutron>, C<mp> for mass of
519             L<proton|https://en.wikipedia.org/wiki/Proton> or C<u> for L<atomic mass
520             unit|https://en.wikipedia.org/wiki/Dalton_(unit)>.
521              
522             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>force(1, 'pdl');>
523              
524             Construct a L<force|https://en.wikipedia.org/wiki/Force> object. Unit must be
525             one of C<N> for L<Newton|https://en.wikipedia.org/wiki/Newton_(unit)>, C<kgf>
526             for L<kilogram-force|https://en.wikipedia.org/wiki/Kilogram-force>, C<lbf> for
527             L<pound-force|https://en.wikipedia.org/wiki/Pound_(force)> or C<pdl> for
528             L<poundal|https://en.wikipedia.org/wiki/Poundal>.
529              
530             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>pressure(1, 'inHg');>
531              
532             Construct a L<pressure|https://en.wikipedia.org/wiki/Pressure> object. Unit
533             must be one of C<pa> for
534             L<Pascal|https://en.wikipedia.org/wiki/Pascal_(unit)>, C<at> for L<technical
535             atmosphere|https://en.wikipedia.org/wiki/Kilogram-force_per_square_centimetre>,
536             C<atm> for L<standard
537             atmosphere|https://en.wikipedia.org/wiki/Standard_atmosphere_(unit)>, C<mH2O>
538             for L<meter of water|https://en.wikipedia.org/wiki/Centimetre_of_water>,
539             C<mmHg> for millimeter mercury, C<Torr> for
540             L<torr|https://en.wikipedia.org/wiki/Torr>, C<ftH2O> for foot of water, C<inH2O>
541             for L<inch of water|https://en.wikipedia.org/wiki/Inch_of_water>, C<inHg> for
542             L<inch of mercury|https://en.wikipedia.org/wiki/Inch_of_mercury> or C<psi> for
543             L<pounds per square
544             inch|https://en.wikipedia.org/wiki/Pounds_per_square_inch>.
545              
546             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>temperature(1, 'C');>
547              
548             Construct a L<temperature|https://en.wikipedia.org/wiki/Temperature> object.
549             Unit must be one of C<C> for degrees
550             L<Celsius|https://en.wikipedia.org/wiki/Celsius>, C<F> for degrees
551             L<Fahrenheit|https://en.wikipedia.org/wiki/Fahrenheit> or C<K> for
552             L<Kelvin|https://en.wikipedia.org/wiki/Kelvin>.
553              
554             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>energy(1, 'J');>
555              
556             Construct an L<energy|https://en.wikipedia.org/wiki/Energy> object. Unit must
557             be one of C<J> for L<Joule|https://en.wikipedia.org/wiki/Joule>, C<BTU> for
558             L<British thermal unit|https://en.wikipedia.org/wiki/British_thermal_unit>,
559             C<ftlbf> for L<foot-pound|https://en.wikipedia.org/wiki/Foot-pound_(energy)>,
560             C<hp> for L<horsepower|https://en.wikipedia.org/wiki/Horsepower>, C<cal15> for
561             L<15 degree calorie|https://en.wikipedia.org/wiki/Calorie>, C<calit> for
562             L<International calorie|https://en.wikipedia.org/wiki/Calorie> or C<calth> for
563             L<thermochemical calorie|https://en.wikipedia.org/wiki/Calorie>.
564              
565             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>power(1, 'ps');>
566              
567             Construct a L<power|https://en.wikipedia.org/wiki/Power_(physics)> object.
568             Unit must be one of C<W> for L<Watts|https://en.wikipedia.org/wiki/Watt>,
569             C<ps> for L<metric
570             horsepower|https://en.wikipedia.org/wiki/Horsepower#Metric_horsepower_(PS,_cv,_hk,_pk,_ks,_ch)>
571             or C<BTUh> for L<BTU per
572             hour|https://en.wikipedia.org/wiki/British_thermal_unit#As_a_unit_of_power>.
573              
574             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>linear_density(1, 'D');>
575              
576             Construct a L<linear density|https://en.wikipedia.org/wiki/Linear_density>
577             object. Unit must be one of C<D> for
578             L<Denier|https://en.wikipedia.org/wiki/Units_of_textile_measurement#Denier> or
579             C<kgpm> for kilogram per meter.
580              
581             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>field_equation(1, 'G');>
582              
583             Construct a L<field
584             equation|https://en.wikipedia.org/wiki/Einstein_field_equations> object. Unit
585             must be one of C<G> for L<gravitational
586             constant|https://en.wikipedia.org/wiki/Gravitational_constant> or C<Nm2pkg2>
587             for Newton meter squared per kilogram squared.
588              
589             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>heat_capacity(1,
590             'BTUlbR');>
591              
592             Construct a L<heat capacity|https://en.wikipedia.org/wiki/Heat_capacity>
593             object. Unit must be one of C<BTUlbR> (British thermal unit per pound
594             L<Rankine|https://en.wikipedia.org/wiki/Rankine_scale>) for L<specific heat
595             capacity|https://en.wikipedia.org/wiki/Specific_heat_capacity#English_(Imperial)_engineering_units>
596             or C<JpkgK> for Joule per kilogram Kelvin.
597              
598             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>thermodynamic(1,
599             'BTUlb');>
600              
601             Construct a L<thermodynamic|https://en.wikipedia.org/wiki/Thermodynamics>
602             object. Unit must be one of C<BTUlb> for L<specific internal
603             energy|https://en.wikipedia.org/wiki/Internal_energy> or C<Jpkg> for Joule per
604             kilogram.
605              
606             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>magnetic(1, 'muB');>
607              
608             Construct a L<magnetic object|https://en.wikipedia.org/wiki/Bohr_magneton>.
609             Unit must be one of C<muB> for L<Bohr
610             magneton|https://en.wikipedia.org/wiki/Bohr_magneton>, C<mue> for L<magnetic
611             moment of electron|https://en.wikipedia.org/wiki/Electron_magnetic_moment>,
612             C<muN> for L<nuclear
613             magneton|https://en.wikipedia.org/wiki/Neutron_magnetic_moment>, C<mup> for
614             L<magnetic moment of
615             proton|https://en.wikipedia.org/wiki/Proton_magnetic_moment> or C<Am2> for
616             Ampere meter squared.
617              
618             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>gyromagnetic(1, 'gammap');>
619              
620             Construct a L<gyromagnetic|https://en.wikipedia.org/wiki/Gyromagnetic_ratio>
621             object. Unit must be one of C<gammap> for gyromagnetic ratio of proton,
622             C<gammapalt> for gyromagnetic ratio of proton in water or C<Am2pJs> for Ampere
623             meter squared per Joule second.
624              
625             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>electromagnetic(1, 'h');>
626              
627             Construct a electromagnetic object. Unit must be one of
628             C<h> for L<Planck constant|https://en.wikipedia.org/wiki/Planck_constant>,
629             C<hbar> for Planck constant per 2 Pi or C<Js> for Joule second.
630              
631             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>spectroscopic(1,
632             'Rinf');>
633              
634             Construct a L<spectroscopic|https://en.wikipedia.org/wiki/Spectroscopy>
635             object. Unit must be one of C<Rinf> for L<Rydberg constant for heavy
636             atoms|https://en.wikipedia.org/wiki/Rydberg_constant> or C<pm> for per meter.
637              
638             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>radioactive(1, 'Ci');>
639              
640             Construct a L<radioactive|https://en.wikipedia.org/wiki/Radioactive_decay>
641             object. Unit must be one of C<Ci> for
642             L<Curie|https://en.wikipedia.org/wiki/Curie_(unit)> or C<Bq> for
643             L<becquerel|https://en.wikipedia.org/wiki/Becquerel>.
644              
645             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>radiation(1, 'R');>
646              
647             Construct a L<radiation|https://en.wikipedia.org/wiki/Ionizing_radiation>
648             object. Unit must be one of C<R> for
649             L<Rontgen|https://en.wikipedia.org/wiki/Roentgen_(unit)> or C<Cpkg> for
650             coulomb per kilogram.
651              
652             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>flux(1, 'phi0');>
653              
654             Construct a L<quantum
655             flux|https://en.wikipedia.org/wiki/Magnetic_flux_quantum> object. Unit must be
656             one of C<phi0> for L<magnetic flux
657             quantum|https://en.wikipedia.org/wiki/Magnetic_flux_quantum> or C<Wb> for
658             L<weber|https://en.wikipedia.org/wiki/Weber_(unit)>.
659              
660             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>wavelength(1, 'c1');>
661              
662             Construct a L<wavelength|https://en.wikipedia.org/wiki/Planck%27s_law> object.
663             Unit must be one of C<c1> for first radiation constant or C<Wm2> for Watt
664             meter squared.
665              
666             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>wavenumber(1, 'c2');>
667              
668             Construct a L<wavenumber|https://en.wikipedia.org/wiki/Planck%27s_law> object.
669             Unit must be one of C<c2> for second radiation constant or C<mK> for meter
670             Kelvin.
671              
672             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>luminance(1, 'lam');>
673              
674             Construct a L<luminance|https://en.wikipedia.org/wiki/Luminance> object. Unit
675             must be one of C<lam> for
676             L<lambert|https://en.wikipedia.org/wiki/Lambert_(unit)>, C<flam> for
677             L<footlambert|https://en.wikipedia.org/wiki/Foot-lambert> or C<cdpm2> for
678             L<candela per square
679             meter|https://en.wikipedia.org/wiki/Candela_per_square_metre>.
680              
681             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>charge(1, 'e');>
682              
683             Construct a L<charge|https://en.wikipedia.org/wiki/Electric_charge> object.
684             Unit must be one of C<e> for L<elementary
685             charge|https://en.wikipedia.org/wiki/Elementary_charge> or C<C> for
686             L<coulomb|https://en.wikipedia.org/wiki/Coulomb>.
687              
688             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>electrolysis(1, 'F');>
689              
690             Construct an L<electrolysis|https://en.wikipedia.org/wiki/Electrolysis>
691             object. Unit must be one of C<f> for L<Faraday
692             constant|https://en.wikipedia.org/wiki/Faraday_constant> (lowercase to avoid
693             conflict with Fahrenheit) or C<Cpmol> for coulombs per mole.
694              
695             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>entropy(1, 'k');>
696              
697             Construct an L<entropy|https://en.wikipedia.org/wiki/Entropy> object. Unit
698             must be one of C<k> for L<Boltzmann
699             constant|https://en.wikipedia.org/wiki/Boltzmann_constant> or C<JpK> for Joule
700             per Kelvin.
701              
702             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>proportionality(1,
703             'Na');>
704              
705             Construct a
706             L<proportionality|https://en.wikipedia.org/wiki/Proportionality_(mathematics)>
707             object. Unit must be one of C<Na> for L<Avogadro
708             constant|https://en.wikipedia.org/wiki/Avogadro_constant> or C<pmol> for per
709             mole.
710              
711             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>gas(1, 'R');>
712              
713             Construct a L<gas|https://en.wikipedia.org/wiki/Ideal_gas_law> object. Unit
714             must be one of C<R> for L<molar gas
715             constant|https://en.wikipedia.org/wiki/Gas_constant> or C<JpmolK> for Joule
716             per mole Kelvin.
717              
718             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>mixture(1, 'Vm');>
719              
720             Construct a L<mixture|https://en.wikipedia.org/wiki/Ideal_solution> object.
721             Unit must be one of C<Vm> for L<molar
722             volume|https://en.wikipedia.org/wiki/Molar_volume> or C<m3pmol> for cubic
723             meter per mole.
724              
725             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>isotropic(1, 'alpha');>
726              
727             Construct an L<isotropic|https://en.wikipedia.org/wiki/Polarizability> object.
728             Unit must be one of C<alpha> for polarizability of molecule or C<Cm2pV> for
729             coulomb meter squared per Volt.
730              
731             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>susceptibility(1, 'p');>
732              
733             Construct a
734             L<susceptibility|https://en.wikipedia.org/wiki/Electric_susceptibility>
735             object. Unit must be one of C<p> for dipole of molecule or C<Cm> for coulomb
736             meter.
737              
738             =item C<$f = Class::Measure::Scientific::FX_992vb-E<gt>displacement(1, 'Ds');>
739              
740             Construct a
741             L<displacement|https://en.wikipedia.org/wiki/Electric_displacement_field>
742             object. Unit must be one of C<Ds> for G. electric flux density, C<Ps> for G.
743             electric polarization or C<Cpm2> for coulomb per square meter.
744              
745             =item C<Class::Measure::Scientific::FX_992vb::CONST(1);>
746              
747             All constants are available as the class method C<CONST> which takes the index
748             of the constant as argument as number from 1 to 128. This is the way the
749             constants are recalled on the CASIO fx-992vb.
750              
751             =back
752              
753             =head1 CONFIGURATION AND ENVIRONMENT
754              
755             None.
756              
757             =head1 DEPENDENCIES
758              
759             =over 4
760              
761             =item * Perl 5.16
762              
763             =item * L<Moose>
764              
765             =item * L<MooseX::NonMoose>
766              
767             =item * L<Class::Measure> 0.08 or newer
768              
769             =item * L<List::MoreUtils>
770              
771             =item * L<Log::Log4perl>
772              
773             =back
774              
775             =head1 INCOMPATIBILITIES
776              
777             This module has the same incompatibilities as L<Class::Measure>.
778              
779             =head1 DIAGNOSTICS
780              
781             This module uses L<Log::Log4perl> for logging.
782              
783             =head1 BUGS AND LIMITATIONS
784              
785             The values are based on the constants from the CASIO fx-992vb scientific
786             calculator from the 90s, which are based on JIS-Z-8202-1988 (Japan Industrial
787             Standards). These are not the latest standards and should not be used when
788             more accurate values than those displayed in a pocket calculator from that era
789             are expected. For example the L<2019 redefinition of the SI base
790             units|https://en.wikipedia.org/wiki/2019_redefinition_of_the_SI_base_units> is
791             not and won't be implemented in this module.
792              
793             =head2 Interval scales
794              
795             While the CASIO fx-992vb has the constants to convert between Celsius,
796             Fahrenheit and Kelvin - using zero Celsius in Kelvin, zero Fahrenheit in
797             Celsius and degree Fahrenheit in Kelvin/Celsius - Celsius and Fahrenheit are
798             only units on interval scales as opposed to Kelvin which has a defined
799             thermodynamic zero which makes it a unit on a ratio scale. This module does of
800             course convert directly between those scales, but for completeness the
801             constants used in those calculations can also be accessed as class methods.
802              
803             =over 4
804              
805             =item * Zero Celsius C<Class::Measure::Scientific::FX_992vb::zC()> as
806             I<273.15> Kelvin
807              
808             =item * Zero Fahrenheit C<Class::Measure::Scientific::FX_992vb::zF()> as
809             I<-160/9> Celsius
810              
811             =item * Fahrenheit Kelvin ratio C<Class::Measure::Scientific::FX_992vb::FK()>
812             as I<5/9>
813              
814             =back
815              
816             =head2 Dimensionless quantities
817              
818             Some constants are dimensionless quantities, which means they are independent
819             of the system of unit used and can't be used to convert between units so they
820             are useless in the functionality of this module. These dimensionless quantity
821             constants are listed here for completeness and are available as class methods.
822              
823             =over 4
824              
825             =item * L<Decibel|https://en.wikipedia.org/wiki/Decibel> level difference
826             C<Class::Measure::Scientific::FX_992vb::dB()> as I<0.11512925465>
827              
828             =item * L<Neper|https://en.wikipedia.org/wiki/Neper> level difference
829             C<Class::Measure::Scientific::FX_992vb::Np()> as I<8.68588963807>
830              
831             =item * L<Fine-structure
832             constant|https://en.wikipedia.org/wiki/Fine-structure_constant>
833             C<Class::Measure::Scientific::FX_992vb::a()> as I<7.2973506e-3>
834              
835             =back
836              
837             Please report any bugs or feature requests at
838             L<Bitbucket|
839             https://bitbucket.org/rolandvanipenburg/class-measure-scientific-fx_992vb/issues>.
840              
841             =head1 AUTHOR
842              
843             Roland van Ipenburg, E<lt>roland@rolandvanipenburg.comE<gt>
844              
845             =head1 LICENSE AND COPYRIGHT
846              
847             Copyright 2020-2021 by Roland van Ipenburg
848             This program is free software; you can redistribute it and/or modify
849             it under the GNU General Public License v3.0.
850              
851             =head1 DISCLAIMER OF WARRANTY
852              
853             BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
854             FOR THE SOFTWARE, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
855             OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
856             PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
857             EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
858             WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
859             ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH
860             YOU. SHOULD THE SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL
861             NECESSARY SERVICING, REPAIR, OR CORRECTION.
862              
863             IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
864             WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
865             REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENSE, BE
866             LIABLE TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL,
867             OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE
868             THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
869             RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
870             FAILURE OF THE SOFTWARE TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
871             SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
872             SUCH DAMAGES.
873              
874             =cut