Permalink
Cannot retrieve contributors at this time
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
glibc/stdlib/tst-strtod.c
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
279 lines (246 sloc)
7.63 KB
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
/* Copyright (C) 1991-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#include <ctype.h> | |
#include <locale.h> | |
#include <stddef.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <errno.h> | |
#include <string.h> | |
#include <math.h> | |
struct ltest | |
{ | |
const char *str; /* Convert this. */ | |
double expect; /* To get this. */ | |
char left; /* With this left over. */ | |
int err; /* And this in errno. */ | |
}; | |
static const struct ltest tests[] = | |
{ | |
{ "12.345", 12.345, '\0', 0 }, | |
{ "12.345e19", 12.345e19, '\0', 0 }, | |
{ "-.1e+9", -.1e+9, '\0', 0 }, | |
{ ".125", .125, '\0', 0 }, | |
{ "1e20", 1e20, '\0', 0 }, | |
{ "0e-19", 0, '\0', 0 }, | |
{ "4\00012", 4.0, '\0', 0 }, | |
{ "5.9e-76", 5.9e-76, '\0', 0 }, | |
{ "0x1.4p+3", 10.0, '\0', 0 }, | |
{ "0xAp0", 10.0, '\0', 0 }, | |
{ "0x0Ap0", 10.0, '\0', 0 }, | |
{ "0x0A", 10.0, '\0', 0 }, | |
{ "0xA0", 160.0, '\0', 0 }, | |
{ "0x0.A0p8", 160.0, '\0', 0 }, | |
{ "0x0.50p9", 160.0, '\0', 0 }, | |
{ "0x0.28p10", 160.0, '\0', 0 }, | |
{ "0x0.14p11", 160.0, '\0', 0 }, | |
{ "0x0.0A0p12", 160.0, '\0', 0 }, | |
{ "0x0.050p13", 160.0, '\0', 0 }, | |
{ "0x0.028p14", 160.0, '\0', 0 }, | |
{ "0x0.014p15", 160.0, '\0', 0 }, | |
{ "0x00.00A0p16", 160.0, '\0', 0 }, | |
{ "0x00.0050p17", 160.0, '\0', 0 }, | |
{ "0x00.0028p18", 160.0, '\0', 0 }, | |
{ "0x00.0014p19", 160.0, '\0', 0 }, | |
{ "0x1p-1023", | |
1.11253692925360069154511635866620203210960799023116591527666e-308, | |
'\0', 0 }, | |
{ "0x0.8p-1022", | |
1.11253692925360069154511635866620203210960799023116591527666e-308, | |
'\0', 0 }, | |
{ "Inf", HUGE_VAL, '\0', 0 }, | |
{ "-Inf", -HUGE_VAL, '\0', 0 }, | |
{ "+InFiNiTy", HUGE_VAL, '\0', 0 }, | |
{ "0x80000Ap-23", 0x80000Ap-23, '\0', 0 }, | |
{ "1e-324", 0, '\0', ERANGE }, | |
{ "0x100000000000008p0", 0x1p56, '\0', 0 }, | |
{ "0x100000000000008.p0", 0x1p56, '\0', 0 }, | |
{ "0x100000000000008.00p0", 0x1p56, '\0', 0 }, | |
{ "0x10000000000000800p0", 0x1p64, '\0', 0 }, | |
{ "0x10000000000000801p0", 0x1.0000000000001p64, '\0', 0 }, | |
{ NULL, 0, '\0', 0 } | |
}; | |
static void expand (char *dst, int c); | |
static int long_dbl (void); | |
static int locale_test (void); | |
static int | |
do_test (void) | |
{ | |
char buf[100]; | |
const struct ltest *lt; | |
char *ep; | |
int status = 0; | |
int save_errno; | |
for (lt = tests; lt->str != NULL; ++lt) | |
{ | |
double d; | |
errno = 0; | |
d = strtod(lt->str, &ep); | |
save_errno = errno; | |
printf ("strtod (\"%s\") test %u", | |
lt->str, (unsigned int) (lt - tests)); | |
if (d == lt->expect && *ep == lt->left && save_errno == lt->err) | |
puts ("\tOK"); | |
else | |
{ | |
puts ("\tBAD"); | |
if (d != lt->expect) | |
printf (" returns %.60g, expected %.60g\n", d, lt->expect); | |
if (lt->left != *ep) | |
{ | |
char exp1[5], exp2[5]; | |
expand (exp1, *ep); | |
expand (exp2, lt->left); | |
printf (" leaves '%s', expected '%s'\n", exp1, exp2); | |
} | |
if (save_errno != lt->err) | |
printf (" errno %d (%s) instead of %d (%s)\n", | |
save_errno, strerror (save_errno), | |
lt->err, strerror (lt->err)); | |
status = 1; | |
} | |
} | |
sprintf (buf, "%f", strtod ("-0.0", NULL)); | |
if (strcmp (buf, "-0.000000") != 0) | |
{ | |
printf (" strtod (\"-0.0\", NULL) returns \"%s\"\n", buf); | |
status = 1; | |
} | |
const char input[] = "3752432815e-39"; | |
float f1 = strtold (input, NULL); | |
float f2; | |
float f3 = strtof (input, NULL); | |
sscanf (input, "%g", &f2); | |
if (f1 != f2) | |
{ | |
printf ("f1 = %a != f2 = %a\n", f1, f2); | |
status = 1; | |
} | |
if (f1 != f3) | |
{ | |
printf ("f1 = %a != f3 = %a\n", f1, f3); | |
status = 1; | |
} | |
if (f2 != f3) | |
{ | |
printf ("f2 = %a != f3 = %a\n", f2, f3); | |
status = 1; | |
} | |
const char input2[] = "+1.000000000116415321826934814453125"; | |
if (strtold (input2, NULL) != +1.000000000116415321826934814453125L) | |
{ | |
printf ("input2: %La != %La\n", strtold (input2, NULL), | |
+1.000000000116415321826934814453125L); | |
status = 1; | |
} | |
static struct { const char *str; long double l; } ltests[] = | |
{ | |
{ "42.0000000000000000001", 42.0000000000000000001L }, | |
{ "42.00000000000000000001", 42.00000000000000000001L }, | |
{ "42.000000000000000000001", 42.000000000000000000001L } | |
}; | |
int n; | |
for (n = 0; n < sizeof (ltests) / sizeof (ltests[0]); ++n) | |
if (strtold (ltests[n].str, NULL) != ltests[n].l) | |
{ | |
printf ("ltests[%d]: %La != %La\n", n, | |
strtold (ltests[n].str, NULL), ltests[n].l); | |
status = 1; | |
} | |
status |= long_dbl (); | |
status |= locale_test (); | |
return status ? EXIT_FAILURE : EXIT_SUCCESS; | |
} | |
static void | |
expand (char *dst, int c) | |
{ | |
if (isprint (c)) | |
{ | |
dst[0] = c; | |
dst[1] = '\0'; | |
} | |
else | |
(void) sprintf (dst, "%#.3o", (unsigned int) c); | |
} | |
static int | |
long_dbl (void) | |
{ | |
/* Regenerate this string using | |
echo '(2^53-1)*2^(1024-53)' | bc | sed 's/\([^\]*\)\\*$/ "\1"/' | |
*/ | |
static const char longestdbl[] = | |
"17976931348623157081452742373170435679807056752584499659891747680315" | |
"72607800285387605895586327668781715404589535143824642343213268894641" | |
"82768467546703537516986049910576551282076245490090389328944075868508" | |
"45513394230458323690322294816580855933212334827479782620414472316873" | |
"8177180919299881250404026184124858368"; | |
double d = strtod (longestdbl, NULL); | |
printf ("strtod (\"%s\", NULL) = %g\n", longestdbl, d); | |
if (d != 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.000000) | |
return 1; | |
return 0; | |
} | |
/* Perform a few tests in a locale with thousands separators. */ | |
static int | |
locale_test (void) | |
{ | |
static const struct | |
{ | |
const char *loc; | |
const char *str; | |
double exp; | |
ptrdiff_t nread; | |
} tests[] = | |
{ | |
{ "de_DE.UTF-8", "1,5", 1.5, 3 }, | |
{ "de_DE.UTF-8", "1.5", 1.0, 1 }, | |
{ "de_DE.UTF-8", "1.500", 1500.0, 5 }, | |
{ "de_DE.UTF-8", "36.893.488.147.419.103.232", 0x1.0p65, 26 } | |
}; | |
#define ntests (sizeof (tests) / sizeof (tests[0])) | |
size_t n; | |
int result = 0; | |
puts ("\nLocale tests"); | |
for (n = 0; n < ntests; ++n) | |
{ | |
double d; | |
char *endp; | |
if (setlocale (LC_ALL, tests[n].loc) == NULL) | |
{ | |
printf ("cannot set locale %s\n", tests[n].loc); | |
result = 1; | |
continue; | |
} | |
/* We call __strtod_interal here instead of strtod to tests the | |
handling of grouping. */ | |
d = __strtod_internal (tests[n].str, &endp, 1); | |
if (d != tests[n].exp) | |
{ | |
printf ("strtod(\"%s\") returns %g and not %g\n", | |
tests[n].str, d, tests[n].exp); | |
result = 1; | |
} | |
else if (endp - tests[n].str != tests[n].nread) | |
{ | |
printf ("strtod(\"%s\") read %td bytes and not %td\n", | |
tests[n].str, endp - tests[n].str, tests[n].nread); | |
result = 1; | |
} | |
} | |
if (result == 0) | |
puts ("all OK"); | |
return result; | |
} | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" |