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glibc/stdlib/tst-strtod.c
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/* Copyright (C) 1991,96,97,98,99,2000 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 Library General Public License as | |
published by the Free Software Foundation; either version 2 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 | |
Library General Public License for more details. | |
You should have received a copy of the GNU Library General Public | |
License along with the GNU C Library; see the file COPYING.LIB. If not, | |
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
Boston, MA 02111-1307, USA. */ | |
#include <ctype.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <errno.h> | |
#include <string.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 }, | |
{ NULL, 0, '\0', 0 } | |
}; | |
static void expand (char *dst, int c); | |
static int long_dbl (void); | |
int | |
main (int argc, char ** argv) | |
{ | |
char buf[100]; | |
register 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; | |
} | |
status |= long_dbl (); | |
return status ? EXIT_FAILURE : EXIT_SUCCESS; | |
} | |
static void | |
expand (dst, c) | |
char *dst; | |
register 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; | |
} |