/*
* SPDX-License-Identifier: BSD-3-Clause
*
* Copyright © 2022 Keith Packard
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials provided
* with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <string.h>
#if defined (TINY_STDIO) || !defined(__PICOLIBC__)
#define FULL_TESTS
#endif
#pragma GCC diagnostic ignored "-Wpragmas"
#pragma GCC diagnostic ignored "-Wunknown-warning-option"
#pragma GCC diagnostic ignored "-Wunused-value"
#pragma GCC diagnostic ignored "-Woverflow"
#pragma GCC diagnostic ignored "-Wliteral-range"
static const struct {
char *string;
double dvalue;
float fvalue;
long double ldvalue;
char *end_test;
} tests[] = {
{ "1e2@", 100.0, 100.0f, 100.0l, "@" },
#ifdef FULL_TESTS
#if !defined(TINY_STDIO) || defined(_IO_FLOAT_EXACT)
{ "3752432815e-39%", 0x1.306efbp-98, 0x1.306efcp-98f, 3752432815e-39l, "%" },
{ "3.752432815e-30%", 0x1.306efbp-98, 0x1.306efcp-98f, 3752432815e-39l, "%" },
{ "3752432814e-39^", 3752432814e-39, 0x1.306efap-98f, 3752432814e-39l, "^" },
{ "3.752432814e-30^", 3752432814e-39, 0x1.306efap-98f, 3752432814e-39l, "^" },
#endif
{ "0x10.000@", 16.0, 16.0f, 16.0l, "@" },
{ "0x10.000p@", 16.0, 16.0f, 16.0l, "p@" },
{ "0x10.000p+@", 16.0, 16.0f, 16.0l, "p+@" },
{ "0x10.000p+1@", 32.0, 32.0f, 32.0l, "@" },
{ "0x10.000p-@", 16.0, 16.0f, 16.0l, "p-@" },
{ "0x10.000p-1@", 8.0, 8.0f, 8.0l, "@" },
{ "0x11.000@", 17.0, 17.0f, 17.0l, "@" },
{ "0x0.01@", 1/256.0, 1/256.0f, 1/256.0l, "@" },
{ "0x0.01p", 1/256.0, 1/256.0f, 1/256.0l, "p" },
{ "0x0.01p+", 1/256.0, 1/256.0f, 1/256.0l, "p+" },
{ "0x1p-1@", 0.5, 0.5f, 0.5l, "@" },
{ "0x1p-10000000000000000000000000@", 0.0, 0.0f, 0.0l, "@" },
{ "0x1p0@", 1.0, 1.0f, 1.0l, "@" },
{ "0x10p0@", 16.0, 16.0f, 16.0l, "@" },
{ "0x1p-1023@", 0x1p-1023, 0.0f, 0x1p-1023l, "@" },
/* Check round-to-even for floats */
{ "0x1.000002p0@", 0x1.000002p0, 0x1.000002p0f, 0x1.000002p0l, "@" },
{ "0x1.000003p0@", 0x1.000003p0, 0x1.000004p0f, 0x1.000003p0l, "@" },
{ "0x1.000001p0@", 0x1.000001p0, 0x1.000000p0f, 0x1.000001p0l, "@" },
{ "0x1.000001000000001p0@", 0x1.000001000000001p0, 0x1.000002p0f, 0x1.000001000000001p0l, "@" },
#if __SIZEOF_DOUBLE__ == 8
/* Check round-to-even for doubles */
{ "0x100000000000008p0@", 0x1p56, 0x1p56f, 0x1.00000000000008p56l, "@" },
{ "0x100000000000008.p0@", 0x1p56, 0x1p56f, 0x1.00000000000008p56l, "@" },
{ "0x100000000000008.00p0@", 0x1p56,0x1p56f, 0x1.00000000000008p56l, "@" },
{ "0x10000000000000800p0@", 0x1p64, 0x1p64f, 0x1.00000000000008p64l, "@" },
{ "0x10000000000000801p0@", 0x1.0000000000001p64, 0x1p64f, 0x1.0000000000000801p64l, "@" },
{ "0x10000000000000800.0000000000001p0@", 0x1.0000000000001p64, 0x1p64f, 0x1.00000000000008p64l, "@" },
{ "0x10000000000001800p0@", 0x1.0000000000002p64, 0x1p64f, 0x1.00000000000018p64l, "@" },
#endif
/* Check max values for floats */
{ "0x1.fffffep126@", 0x1.fffffep126, 0x1.fffffep126f, 0x1.fffffep126l, "@" },
{ "0x1.ffffffp126@", 0x1.ffffffp126, 0x1.000000p127f, 0x1.ffffffp126l, "@" },
{ "0x1.fffffep127@", 0x1.fffffep127, 0x1.fffffep127f, 0x1.fffffep127l, "@" },
{ "0x1.ffffffp127@", 0x1.ffffffp127, (float) INFINITY, 0x1.ffffffp127l, "@" }, /* rounds up to INFINITY for float */
#if __SIZEOF_DOUBLE__ == 8
/* Check max values for doubles */
{ "0x1.fffffffffffffp1022@", 0x1.fffffffffffffp1022, (float) INFINITY, 0x1.fffffffffffffp1022l, "@" },
{ "0x1.fffffffffffff8p1022@", 0x1.0000000000000p1023, (float) INFINITY, 0x1.fffffffffffff8p1022l, "@" }, /* rounds up for double */
{ "0x1.fffffffffffffp1023@", 0x1.fffffffffffffp1023, (float) INFINITY, 0x1.fffffffffffffp1023l, "@" },
#endif
#if defined(_TEST_LONG_DOUBLE) && __SIZEOF_LONG_DOUBLE__ > 8
#if __LDBL_MANT_DIG__ > __DBL_MANT_DIG__
{ "0x1.fffffffffffff8p1023@", (double) INFINITY, (float) INFINITY, 0x1.fffffffffffff8p1023l, "@" }, /* rounds up to INFINITY for double */
#else
{ "0x1.fffffffffffff8p1023@", (double) INFINITY, (float) INFINITY, (long double) INFINITY, "@" }, /* rounds up to INFINITY for double */
#endif
/* Check max values for long doubles */
#if __LDBL_MANT_DIG__ == 113
{ "0x1.ffffffffffffffffffffffffffffp16382@", (double) INFINITY, (float) INFINITY, 0x1.ffffffffffffffffffffffffffffp16382l, "@" },
{ "0x1.ffffffffffffffffffffffffffff8p16382@", (double) INFINITY, (float) INFINITY, 0x1.0000000000000000000000000000p16383l, "@" }, /* rounds up for long double */
{ "0x1.ffffffffffffffffffffffffffffp16383@", (double) INFINITY, (float) INFINITY, 0x1.ffffffffffffffffffffffffffffp16383l, "@" },
{ "0x1.ffffffffffffffffffffffffffff8p16383@", (double) INFINITY, (float) INFINITY, (long double) INFINITY, "@" }, /* rounds up to INFINITY for long oduble */
#elif __LDBL_MANT_DIG__ == 64
{ "0x1.fffffffffffffffep16382@", (double) INFINITY, (float) INFINITY, 0x1.fffffffffffffffep16382l, "@" },
{ "0x1.ffffffffffffffffp16382@", (double) INFINITY, (float) INFINITY, 0x1.0000000000000000p16383l, "@" }, /* rounds up for long double */
{ "0x1.fffffffffffffffep16383@", (double) INFINITY, (float) INFINITY, 0x1.fffffffffffffffep16383l, "@" },
{ "0x1.ffffffffffffffffp16383@", (double) INFINITY, (float) INFINITY, (long double) INFINITY, "@" }, /* rounds up to INFINITY for long double */
#endif
#endif
#endif
};
#define NTESTS (sizeof(tests)/sizeof(tests[0]))
int main(void)
{
int i;
double d;
float f;
#ifdef _TEST_LONG_DOUBLE
#ifdef FULL_TESTS
long double ld;
#endif
#endif
char *end;
int ret = 0;
for (i = 0; i < (int) NTESTS; i++) {
d = strtod(tests[i].string, &end);
if (d != tests[i].dvalue) {
printf("strtod(\"%s\"): got %.17e %a want %.17e %a\n", tests[i].string,
d, d, tests[i].dvalue, tests[i].dvalue);
ret = 1;
}
if (strcmp(end, tests[i].end_test) != 0) {
printf("strtod(\"%s\") end is \"%s\" expected \"%s\"\n",
tests[i].string, end, tests[i].end_test);
ret = 1;
}
f = strtof(tests[i].string, &end);
if (f != tests[i].fvalue) {
printf("strtof(\"%s\"): got %.17e %a want %.17e %a\n", tests[i].string,
(double) f, (double) f, (double) tests[i].fvalue, (double) tests[i].fvalue);
ret = 1;
}
if (strcmp(end, tests[i].end_test) != 0) {
printf("strtof(\"%s\") end is \"%s\" expected \"%s\"\n",
tests[i].string, end, tests[i].end_test);
ret = 1;
}
if (tests[i].end_test[0] == '%') {
if ((float) d != f) {
printf("strtof(\"%s\") got %a strtod got %a\n", tests[i].string, (double) f, d);
ret = 1;
}
}
#ifdef _TEST_LONG_DOUBLE
#ifdef FULL_TESTS
if (sizeof(long double) > sizeof(double)
&& tests[i].end_test[0] != '%'
&& tests[i].end_test[0] != '^')
{
ld = strtold(tests[i].string, &end);
if (ld != tests[i].ldvalue) {
printf("strtold(\"%s\"): got %.17Le %La want %.17Le %La\n", tests[i].string,
ld, ld, tests[i].ldvalue, tests[i].ldvalue);
ret = 1;
}
if (strcmp(end, tests[i].end_test) != 0) {
printf("strtold(\"%s\") end is \"%s\" expected \"%s\"\n",
tests[i].string, end, tests[i].end_test);
ret = 1;
}
}
#endif
#endif
}
return ret;
}