forked from KolibriOS/kolibrios
97 lines
4.8 KiB
C
97 lines
4.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <float.h>
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#include "test.h"
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#define length(x) (sizeof(x) / sizeof *(x))
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static struct {
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char *s;
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long double f;
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} t[] = {
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{"0", 0.0},
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{"12.345", 12.345L},
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{"1.2345e1", 12.345L},
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{"1e+1000000", INFINITY},
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{"1e-1000000", 0},
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#if LDBL_MANT_DIG == 53
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// 2^-1074 * 0.5 - eps
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{".2470328229206232720882843964341106861825299013071623822127928412503377536351043e-323", 0},
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// 2^-1074 * 0.5 + eps
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{".2470328229206232720882843964341106861825299013071623822127928412503377536351044e-323", 0x1p-1074},
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// 2^-1074 * 1.5 - eps
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{".7410984687618698162648531893023320585475897039214871466383785237510132609053131e-323", 0x1p-1074},
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// 2^-1074 * 1.5 + eps
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{".7410984687618698162648531893023320585475897039214871466383785237510132609053132e-323", 0x1p-1073},
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// 2^-1022 + 2^-1075 - eps
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{".2225073858507201630123055637955676152503612414573018013083228724049586647606759e-307", 0x1p-1022},
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// 2^-1022 + 2^-1075 + eps
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{".2225073858507201630123055637955676152503612414573018013083228724049586647606760e-307", 0x1.0000000000001p-1022},
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// 2^1024 - 2^970 - eps
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{"17976931348623158079372897140530341507993413271003782693617377898044"
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"49682927647509466490179775872070963302864166928879109465555478519404"
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"02630657488671505820681908902000708383676273854845817711531764475730"
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"27006985557136695962284291481986083493647529271907416844436551070434"
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"2711559699508093042880177904174497791.999999999999999999999999999999", 0x1.fffffffffffffp1023},
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// 2^1024 - 2^970
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{"17976931348623158079372897140530341507993413271003782693617377898044"
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"49682927647509466490179775872070963302864166928879109465555478519404"
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"02630657488671505820681908902000708383676273854845817711531764475730"
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"27006985557136695962284291481986083493647529271907416844436551070434"
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"2711559699508093042880177904174497792", INFINITY},
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// some random numbers
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{".5961860348131807091861002266453941950428e00", 0.59618603481318067}, // 0x1.313f4bc3b584cp-1
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{"1.815013169218038729887460898733526957442e-1", 0.18150131692180388}, // 0x1.73b6f662e1712p-3
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{"42.07082357534453600681618685682257590772e-2", 0.42070823575344535}, // 0x1.aece23c6e028dp-2
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{"665.4686306516261456328973225579833470816e-3", 0.66546863065162609}, // 0x1.54b84dea53453p-1
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{"6101.852922970868621786690495485449831753e-4", 0.61018529229708685}, // 0x1.386a34e5d516bp-1
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{"76966.95208236968077849464348875471158549e-5", 0.76966952082369677}, // 0x1.8a121f9954dfap-1
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{"250506.5322228682496132604807222923702304e-6", 0.25050653222286823}, // 0x1.0084c8cd538c2p-2
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{"2740037.230228005325852424697698331177377e-7", 0.27400372302280052}, // 0x1.18946e9575ef4p-2
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{"20723093.50049742645941529268715428324490e-8", 0.20723093500497428}, // 0x1.a868b14486e4dp-3
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{"0.7900280238081604956226011047460238748912e1", 7.9002802380816046}, // 0x1.f99e3100f2eaep+2
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{"0.9822860653737296848190558448760465863597e2", 98.228606537372968}, // 0x1.88ea17d506accp+6
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{"0.7468949723190370809405570560160405324869e3", 746.89497231903704}, // 0x1.75728e73f48b7p+9
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{"0.1630268320282728475980459844271031751665e4", 1630.2683202827284}, // 0x1.97912c28d5cbp+10
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{"0.4637168629719170695109918769645492022088e5", 46371.686297191707}, // 0x1.6a475f6258737p+15
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{"0.6537805944497711554209461686415872067523e6", 653780.59444977110}, // 0x1.3f3a9305bb86cp+19
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{"0.2346324356502437045212230713960457676531e6", 234632.43565024371}, // 0x1.ca4437c3631eap+17
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{"0.9709481716420048341897258980454298205278e8", 97094817.164200485}, // 0x1.7263284a8242cp+26
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{"0.4996908522051874110779982354932499499602e9", 499690852.20518744}, // 0x1.dc8ad6434872ap+28
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#elif LDBL_MANT_DIG == 64
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// 2^-16445 * 0.5 - eps
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{".1822599765941237301264202966809709908199525407846781671860490243514185844316698e-4950", 0},
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// 2^-16445 * 0.5 + eps
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{".1822599765941237301264202966809709908199525407846781671860490243514185844316699e-4950", 0x1p-16445L},
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// 2^-16445 * 1.5 - eps
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{".5467799297823711903792608900429129724598576223540345015581470730542557532950096e-4950", 0x1p-16445L},
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// 2^-16445 * 1.5 + eps
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{".5467799297823711903792608900429129724598576223540345015581470730542557532950097e-4950", 0x1p-16444L},
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// 2^-16382 + 2^-16446 - eps
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{".3362103143112093506444937793915876332724499641527442230928779770593420866576777e-4931", 0x1p-16382L},
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// 2^-16382 + 2^-16446 + eps
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{".3362103143112093506444937793915876332724499641527442230928779770593420866576778e-4931", 0x1.0000000000000002p-16382L},
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// 2^16384 - 2^16319 - eps
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{"118973149535723176505351158982948.86679662540046955672e4900", 0x1.fffffffffffffffep16383L},
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// 2^16384 - 2^16319 + eps
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{"118973149535723176505351158982948.86679662540046955673e4900", INFINITY},
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#endif
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};
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int main(void)
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{
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int i;
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long double x;
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char *p;
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for (i = 0; i < length(t); i++) {
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x = strtold(t[i].s, &p);
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if (x != t[i].f)
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t_error("strtold(\"%s\") want %La got %La\n", t[i].s, t[i].f, x);
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}
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printf("%s finished\n", __FILE__);
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return t_status;
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}
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