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/* vim:expandtab
* conversion.c
* Wcalc
*
* Created by Kyle Wheeler on Wed Jul 31 2002.
* Copyright (c) 2002 Kyle Wheeler. All rights reserved.
*
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <string.h> /* for strcmp() */
#include "calculator.h"
#include "conversion.h"
#ifdef MEMWATCH
#include "memwatch.h"
#endif
/* The conversion tables */
/* based on Meters */
const struct conversion lengths[] = {
{"10000000000", "Angstroms", {"Å","angstrom","angstroms",NULL}},
{"6.68457808276714901267478224803e-12",
"Astronomical Units", {"AU","ua","astronomical_unit","astronomical_units",NULL}},
{"0.004557", "Cable Lengths", {"cable_length","cable_lengths",NULL}},
{"100", "Centimeters", {"cm","centimeter","centimeters",NULL}},
{"0.04971", "Chains", {"ch","chain","chains",NULL}},
{"2.187227", "Cubits", {"cubit","cubits",NULL}},
{"0.546807", "Fathoms", {"fth","fath","fathom","fathoms",NULL}},
{"3.28083991666666","Feet", {"ft","feet","foot","'",NULL}},
{"0.004971", "Furlongs", {"fur","furlong","furlongs",NULL}},
{"39.3700789999999","Inches", {"in","inch","inches","\"",NULL}},
{"0.001", "Kilometers", {"km","kilometer","kilometers",NULL}},
{"0.000207", "Leagues", {"league","leagues",NULL}},
{"0.00018", "Nautical Leagues", {"nautical_league","nautical_leagues",NULL}},
{"1.05702289450170391750030273856e-16",
"Light-years", {"ly","lightyear","lightyears",NULL}},
{"4.97097", "Links", {"link","links",NULL}},
{"1.00", "Meters", {"m","meter","meters",NULL}},
{"39370078.740157", "Microinches", {"mci","microinch","microinches",NULL}},
{"1000000", "Microns", {"µ","micron","microns",NULL}},
{"0.000621", "Miles", {"mi","mile","miles",NULL}},
{"0.000539957", "Nautical Miles", {"nmi","n_mile","n_miles","naut_mi","NM","n.m.","nautical_mile","nautical_miles",NULL}},
{"1000", "Millimeters", {"mm","millimeter","millimeters",NULL}},
{"39370.07874", "Mils", {"mil","mils",NULL}},
{"1000000000", "Nanometers", {"nm","nanometer","nanometers",NULL}},
{"3.24077648680546210191415652999e-17",
"Parsec", {"pc","psc","parsec","parsecs",NULL}},
{"236.2205", "Pica", {"pi","pica","picas",NULL}},
{"2834.6457", "Points", {"pt","point","points",NULL}},
{"0.198839", "Rods", {"rd","rod","rods",NULL}},
{"4.374453", "Spans", {"span","spans",NULL}},
{"1.1811", "Varas", {"vara","varas",NULL}},
{"1.093613", "Yards", {"yd","yard","yards",NULL}},
{NULL,NULL,{NULL}}
};
/* based on Acres */
const struct conversion areas[] = {
{"1.00", "Acre", {"ac","A","acre","acres",NULL}},
{"1.21", "Commercial Acre", {"commercial_acre","commercial_acres",NULL}},
{"0.617369", "Irish Acre", {"irish_acre","irish_acres",NULL}},
{"0.999996", "Survey Acre", {"survey_acre","survey_acres",NULL}},
{"40.468564", "Are", {"a","are","ares",NULL}},
{"200.020406", "Base boxe (tin plated steel)", {"base_boxe",NULL}},
{"1224.0945", "Bin (Taiwan)", {"bin","bins",NULL}},
{"1224.0945", "Bu (Japan)", {"bu.JP",NULL}},
{"9.176545", "Cantero (Ecuador)", {"cantero",NULL}},
{"11.241268", "Cao (Vietnam)", {"cao",NULL}},
{"0.617369", "Colpa (Ireland)", {"colpas","colps","collops",NULL}},
{"4046.8564", "Centaire", {"ca","centiare","cetaires",NULL}},
{"0.404686", "Hectare", {"ha","hectare","hectares",NULL}},
{"5.645726", "Labor (Canada)", {"labors.CA",NULL}},
{"0.005645", "Labor (US)", {"labors.US","labor","labors",NULL}},
{"0.579036", "Manzana (Costa Rica)", {"manzana","manzanas","manzanas.CR",NULL}},
{"0.404686", "Manzana (Argentina)", {"manzanas.AR",NULL}},
{"2.529285", "Rai (Thailand)", {"rai",NULL}},
{"3.999984", "Rood", {"rood","roods",NULL}},
{"11.241268", "Sao (Vietnam)", {"sao",NULL}},
{"463.027064", "Scruple (ancient Rome)", {"scruples.Rome",NULL}},
{"0.001562", "Section (US Survey)", {"sec","section","sections",NULL}},
{"435.599981", "Square", {"sq","square","squares",NULL}},
{"48.401584", "Square (Sri Lanka)", {"sq.SL",NULL}},
{"62726399652.54841", "Square Caliber", {"sq.cal.",NULL}},
{"40468564", "Square Centimeter", {"sq.cm.",NULL}},
{"11151360.073126", "Square Digit", {"sq.digit.",NULL}},
{"43559.999759", "Square International Foot", {"sq.ft.IN",NULL}},
{"43559.825338", "Square US Survey Foot", {"sq.ft","sq.ft.US",NULL}},
{"6272639.96528", "Square International Inch", {"sq.in.IN",NULL}},
{"6272614.848634", "Square US Survey Inch", {"sq.in","sq.in.US",NULL}},
{"4046.8564", "Square Meter", {"sq.m.",NULL}},
{"0.004047", "Square Kilometer", {"sq.km.",NULL}},
{"4839.980766", "Square US Survey Yard", {"sq.yd.","sq.yd.US",NULL}},
{"0.001562", "Square Miles", {"sq.mi.","square_miles",NULL}},
{"38358.828494", "Square Paris Foot (Canada)", {"sq.ft.CA",NULL}},
{"0.000043", "Township", {"twp","township","townships",NULL}},
{NULL,NULL,{NULL}}
};
/* based on US Gallons */
const struct conversion volumes[] = {
{"4", "#2.5 can", {"2.5can",NULL}},
{"1", "#10 can", {"10can",NULL}},
{"0.031746", "Barrel (US, liquid)", {"bbl","barrel","barrels",NULL}},
{"1.604167", "Board Foot", {"bd_ft","fbm","BF","board_feet",NULL}},
{"0.107421", "Bushel (US)", {"bu",NULL}},
{"3071.09474", "Coffeespoon", {"coffeespoon","coffeespoons",NULL}},
{"3784.296607", "Cooking milliliter", {"cooking_milliliter","cooking_milliliters",NULL}},
{"0.001044", "Cord (firewood)", {"cd","cord","cords",NULL}},
{"0.008355", "Cord Foot (timber)", {"cd_ft","cord_foot","cord_feet",NULL}},
{"3785.411784", "Cubic Centimeter", {"cc","cm3","cubic_centimeter","cubic_centimeters",NULL}},
{"3.785411784", "Cubic Decimeter", {"dm3","cubic_decimeter","cubic_decimeters",NULL}},
{"0.133681", "Cubic Foot", {"ft3","cubic_foot","cubic_feet",NULL}},
{"231", "Cubic Inch", {"i3","cubic_inch","cubic_inches",NULL}},
{"0.003785411784", "Cubic Meter", {"m3","cubic_meter","cubic_meters",NULL}},
{"16", "Cup (US)", {"c","cups","cup",NULL}},
{"12284.379957", "Dash", {"ds",NULL}},
{"58350.801541", "Drop", {"gtt","drops","drop",NULL}},
{"5", "Fifth", {"fifths","fifth",NULL}},
{"127.999998", "Fluid Ounce (US)", {"fl.oz.","fl.oz.US",NULL}},
{"133.227867", "Fluid Ounce (UK)", {"fl.oz.UK",NULL}},
{"1", "Gallon (US)", {"gal","gallon","gallons",NULL}},
{"32", "Gill (US)", {"gi","gill","gills",NULL}},
{"0.03785411784", "Hectoliter", {"hl","hectoliter","hectoliters",NULL}},
{"0.015873", "Hogshead (US)", {"hhd","hogshead","hogsheads",NULL}},
{"85.333334", "Jigger", {"jigger","jiggers",NULL}},
{"3.785411784", "Liter", {"l","liter","liters",NULL}},
{"0.491612", "Measure (Ancient Hebrew)", {"measure","measures",NULL}},
{"3785.411784", "Milliliter", {"ml","milliliter","milliliters",NULL}},
{"8", "Pint (US)", {"pt","pint","pints",NULL}},
{"0.429684", "Peck (US)", {"pk","peck","pecks",NULL}},
{"6142.189979", "Pinch", {"pinch","pinches",NULL}},
{"0.007937", "Pipe (US)", {"pipe","pipes",NULL}},
{"127.999998", "Pony", {"pony","ponies",NULL}},
{"4", "Quart (US)", {"qt","quart","quarts",NULL}},
{"0.013011", "Quarter (UK)", {"qtr.UK","Q.UK","quarter.UK","quarters.UK",NULL}},
{"0.003785411784", "Stere", {"st","stere","steres",NULL}},
{"3197.46888", "Scruple (UK)", {"scruple.UK","scruples.UK",NULL}},
{"256", "Tablespoon (US)", {"tbsp","tbsp.US","tablespoon","tablespoons",NULL}},
{"204.745415", "Tablespoon (UK)", {"tbsp.UK",NULL}},
{"768", "Teaspoon (US)", {"tsp","tsp.US","teaspoon","teaspoons",NULL}},
{"818.981651", "Teaspoon (UK)", {"tsp.UK",NULL}},
{NULL,NULL,{NULL}}
};
/* based on the Avoirdupois Pound */
const struct conversion masses[] = {
{"2268", "Carat", {"ct","carat","carats",NULL}},
{"256", "Dram (Avoirdupois)", {"dr.Av","dr","dram","drams",NULL}},
{"116.666666666667", "Dram (Apothecaries)", {"dr.Ap",NULL}},
{"7000", "Grain", {"gr","grain","grains",NULL}},
{"453.6", "Gram", {"g","gram","grams",NULL}},
{"0.0004536", "Microgram", {"µg","mcg","microgram","micrograms",NULL}},
{"0.4536", "Milligram", {"mg","milligram","milligrams",NULL}},
{"0.01", "Hundredweight (US)", {"Cwt","cwt","hundredweight","hundredweights",NULL}},
{"0.4536", "Kilogram", {"kg","kilogram","kilograms",NULL}},
{"16", "Ounce (Avoir.)", {"oz","ounce","ounces","oz.Av",NULL}},
{"14.5833333333334", "Ounce (Apoth. & Troy)", {"oz.Ap","oz.Tr",NULL}},
{"291.666666666667", "Pennyweight", {"dwt","pwt","pennyweight","pennyweights",NULL}},
{"1.21527777777777", "Pound (Troy)", {"lb_t","lb.Tr","#",NULL}},
{"1", "Pound (Avoir.)", {"lb","lb_av","lb.Av","lbs","pounds","pound",NULL}},
{"0.04", "Quarter (US)", {"qtr","Q","Qr","quarter","quarters","Qr.US",NULL}},
{"350", "Scruple (Apoth.)", {"s","scruple","scruples","s.Ap",NULL}},
{"0.03105590062111801", "Slugs", {"slug","slugs",NULL}},
{"0.07142857142857142", "Stone", {"stone","stones",NULL}},
{"0.0005", "Short Ton", {"T","ton","tons","short_ton","short_tons",NULL}},
{"0.0004536", "Metric Ton / Tonne", {"MT","t","metric_ton","metric_tons",NULL}},
{"0.0004464285714285714","Long Ton", {"L.T.","LT","long_ton","long_tons",NULL}},
{NULL,NULL,{NULL}}
};
/* based on feet per second */
const struct conversion speeds[] = {
{"30.48", "Centimeters/second", {"cm/s",NULL}},
{"0.3048", "Meters/second", {"m/s",NULL}},
{"1", "Feet/second", {"f/s",NULL}},
{"60", "Feet/minute", {"f/m",NULL}},
{"0.0909090909090909091", "Furlongs/minute", {"fur/m",NULL}},
{"1.0972853161278995", "Kilometers/hour", {"km/h",NULL}},
{"0.5924837511331251", "Knots", {"k","knot","knots",NULL}},
{"5.454644629902362", "Leagues/day", {"leagues/day","league/day",NULL}},
{"0.0009191187537183524", "Mach (dry air, 273 kelvin)", {"M","Ma","mach","machs",NULL}},
{"0.68181818181818181819", "Miles/hour", {"mph","mile/hr","miles/hr","mile/hour","miles/hour",NULL}},
{NULL,NULL,{NULL}}
};
/* based on horsepower */
const struct conversion powers[] = {
{"2547.160889", "BTU/hour", {"BTU/hr",NULL}},
{"7460000000", "Ergs/sec", {"ergs/s",NULL}},
{"550.221342", "Foot-lbs/sec", {"ft-lbf/s","ft-lb/s","foot-pound_per_second","foot-pounds_per_second",NULL}},
{"1", "Horsepower", {"hp","horse","horsepower",NULL}},
{"10.697948", "KiloCalories/min", {"kC/m",NULL}},
{"0.178299", "KiloCalories/sec", {"kC/s",NULL}},
{"0.746", "Kilowatts", {"kW","kilowatt","kilowatts",NULL}},
{"0.000000746", "Gigawatts", {"GW","gigawatt","gigawatts",NULL}},
{"0.000746", "Megawatts", {"MW","megawatt","megawatts",NULL}},
{"746000", "Milliwatts (mW)", {"mW","milliwatt","milliwatts",NULL}},
{"746", "Watts (joules/sec)", {"W","watt","watts","J/s",NULL}},
{NULL,NULL,{NULL}}
};
/* based on Newtons */
const struct conversion forces[] = {
{"100000", "Dyne", {"dyn","dyne","dynes",NULL}},
{"101.971621", "Gram-force", {"gf","gram-force",NULL}},
{"0.101972", "Kilopond (kgm-force)", {"kgf","kilopond","kiloponds",NULL}},
{"0.000225", "Kip (kilopound", {"kips","kilopound","kilopounds",NULL}},
{"1", "Newton", {"N","newton","newtons",NULL}},
{"0.224809", "Pound", {"lbf","pound_force","pounds_force",NULL}},
{"7.233011", "Poundal", {"pdl","pl","poundal","poundals",NULL}},
{NULL,NULL,{NULL}}
};
/* based on meters per square second */
const struct conversion accelerations[] = {
{"3.28084", "Celo", {"celo","celos",NULL}},
{"10000", "Centigal", {"centigal","centigals",NULL}},
{"100", "Centimeter/square second", {"cm/s/s","cm/s^2",NULL}},
{"1000", "Decigal", {"Dg","decigal","decigals",NULL}},
{"3.28084", "Foot/square second", {"f/s/s","f/s^2",NULL}},
{"0.101972", "G-unit (G)", {"G","G-units",NULL}},
{"100", "Galileo", {"Gal","gal","galileo","galileos",NULL}},
{"0.101972", "Grav", {"grav","gravs",NULL}},
{"39.370079", "Inch/square second", {"in/s/s","in/s^2",NULL}},
{"3.6", "Kilometer/hour/second", {"km/h/s",NULL}},
{"0.001", "Kilometer/square second", {"km/s/s","km/s^2",NULL}},
{"0.1", "Leo", {"leo","leos",NULL}},
{"1", "Meter/square second", {"m/s/s","m/s^2",NULL}},
{"134.216178", "Mile/hour/minute", {"mi/h/m",NULL}},
{"2.236936", "Mile/hour/second", {"mi/h/s",NULL}},
{"0.000621", "Mile/square second", {"mi/s/s","mi/s^2",NULL}},
{"100000", "Milligal", {"mGal","milligals",NULL}},
{"1000", "Millimeter/square second", {"mm/s/s","mm/s^2",NULL}},
{NULL,NULL,{NULL}}
};
char * from_temperatures[] = {
"[%1.15f]", // kelvin
"[%1.15f + 273.15]", // celsius
"[%1.15f / 1.8]", // rankine
"[(%1.15f - 32)/1.8 + 273.15]", // farenheit
"[((5/4) * %1.15f) + 273.15]" // reaumur
};
char * to_temperatures[] = {
"%s", // kelvin
"%s - 273.15", // celsius
"%s * 1.8", // rankine
"1.8*(%s-273.15)+32", // farenheit
"(%s-273.15)*(4/5)" // reaumur
};
const struct conversion * conversions[] = {
lengths,
areas,
volumes,
masses,
speeds,
powers,
forces,
accelerations,
NULL
};
#define CONVERS(x) (x>7)?accelerations:((x>6)?forces:((x>5)?powers:((x>4)?speeds:((x>3)?masses:((x>2)?volumes:((x>1)?areas:lengths))))))
int identify_units(char * unit1, char * unit2)
{
size_t cat_num;
int u1 = -1, u2 = -1;
for (cat_num = 0; conversions[cat_num] != NULL; cat_num++) {
size_t unit_num;
const struct conversion *category = conversions[cat_num];
for (unit_num = 0; category[unit_num].name != NULL; unit_num++) {
size_t abbrev_num;
for (abbrev_num = 0;
category[unit_num].aka[abbrev_num] != NULL ;
abbrev_num++) {
if (!strcmp(category[unit_num].aka[abbrev_num], unit1)) {
if (u2 == -1) {
u1 = cat_num;
} else if (u2 == cat_num) {
return u2;
} else {
return -1;
}
} else if (!strcmp(category[unit_num].aka[abbrev_num],unit2)) {
if (u1 == -1) {
u2 = cat_num;
} else if (u1 == cat_num) {
return u1;
} else {
return -1;
}
}
}
}
}
if (-1 == u1) {
return -3;
} else if (-1 == u2) {
return -4;
}
return -2;
}
int unit_id(int utype, char * unit)
{
size_t unit_num;
for (unit_num = 0; (conversions[utype])[unit_num].name != NULL; unit_num++) {
size_t abbrev_num;
for (abbrev_num = 0;
(conversions[utype])[unit_num].aka[abbrev_num] != NULL ;
abbrev_num++) {
if (!strcmp((conversions[utype])[unit_num].aka[abbrev_num], unit)) {
return unit_num;
}
}
}
return -1;
}
void uber_conversion (mpfr_t output, int utype, int fromunit, int tounit, mpfr_t value)
{
if (utype != TEMPERATURE_C) {
const struct conversion *ltable = conversions[utype];
mpfr_t tofac, fromfac;
mpfr_init_set_str(tofac,ltable[tounit].factor,0,GMP_RNDN);
mpfr_init_set_str(fromfac,ltable[fromunit].factor,0,GMP_RNDN);
mpfr_div(tofac,tofac,fromfac,GMP_RNDN);
mpfr_mul(output,tofac,value,GMP_RNDN);
mpfr_clear(tofac);
mpfr_clear(fromfac);
} else {
mpfr_t temp;
mpfr_init(temp);
/* convert to kelvin */
switch (fromunit) {
case KELVIN:
break;
case CELSIUS:
mpfr_set_d(temp,273.15,GMP_RNDN);
mpfr_add(value,value,temp,GMP_RNDN);
break;
case RANKINE:
mpfr_set_d(temp,1.8,GMP_RNDN);
mpfr_div(value,value,temp,GMP_RNDN);
break;
case FARENHEIT:
mpfr_sub_ui(value,value,32,GMP_RNDN);
mpfr_set_d(temp,1.8,GMP_RNDN);
mpfr_div(value,value,temp,GMP_RNDN);
mpfr_set_d(temp,273.15,GMP_RNDN);
mpfr_add(value,value,temp,GMP_RNDN);
break;
case REAUMUR:
mpfr_set_d(temp,(5/4),GMP_RNDN);
mpfr_mul(value,value,temp,GMP_RNDN);
mpfr_set_d(temp,273.15,GMP_RNDN);
mpfr_add(value,value,temp,GMP_RNDN);
break;
}
/* convert from kelvin */
switch (tounit) {
case KELVIN:
break;
case CELSIUS:
mpfr_set_d(temp,273.15,GMP_RNDN);
mpfr_sub(output,value,temp,GMP_RNDN);
break;
case RANKINE:
mpfr_set_d(temp,1.8,GMP_RNDN);
mpfr_mul(output,value,temp,GMP_RNDN);
break;
case FARENHEIT:
mpfr_set_d(temp,273.15,GMP_RNDN);
mpfr_sub(value,value,temp,GMP_RNDN);
mpfr_set_d(temp,1.8,GMP_RNDN);
mpfr_mul(value,value,temp,GMP_RNDN);
mpfr_add_ui(output,value,32,GMP_RNDN);
break;
case REAUMUR:
mpfr_set_d(temp,273.15,GMP_RNDN);
mpfr_sub(value,value,temp,GMP_RNDN);
mpfr_set_d(temp,(4/5),GMP_RNDN);
mpfr_mul(output,value,temp,GMP_RNDN);
break;
}
mpfr_clear(temp);
/* The old way *//*
//char stage1[100];
//char composite[100];
//sprintf(stage1,from_temperatures[fromunit],value);
//sprintf(composite,to_temperatures[tounit],stage1);
//return parseme(composite);
*/
}
}
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