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glibc/misc/tst-efgcvt.c
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/* Copyright (C) 1998, 1999, 2000, 2004 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, write to the Free | |
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
02111-1307 USA. */ | |
#ifndef _GNU_SOURCE | |
# define _GNU_SOURCE 1 | |
#endif | |
#include <float.h> | |
#include <math.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <string.h> | |
int error_count; | |
typedef struct | |
{ | |
double value; | |
int ndigit; | |
int decpt; | |
char result[30]; | |
} testcase; | |
typedef char * ((*efcvt_func) (double, int, int *, int *)); | |
typedef int ((*efcvt_r_func) (double, int, int *, int *, char *, size_t)); | |
static testcase ecvt_tests[] = | |
{ | |
{ 0.0, 0, 1, "" }, | |
{ 10.0, 0, 2, "" }, | |
{ 10.0, 1, 2, "1" }, | |
{ 10.0, 5, 2, "10000" }, | |
{ -12.0, 5, 2, "12000" }, | |
{ 0.2, 4, 0, "2000" }, | |
{ 0.02, 4, -1, "2000" }, | |
{ 5.5, 1, 1, "6" }, | |
{ 1.0, -1, 1, "" }, | |
{ 0.01, 2, -1, "10" }, | |
{ 100.0, -2, 3, "" }, | |
{ 100.0, -5, 3, "" }, | |
{ 100.0, -4, 3, "" }, | |
{ 100.01, -4, 3, "" }, | |
{ 123.01, -4, 3, "" }, | |
{ 126.71, -4, 3, "" }, | |
{ 0.0, 4, 1, "0000" }, | |
#if DBL_MANT_DIG == 53 | |
{ 0x1p-1074, 3, -323, "494" }, | |
{ -0x1p-1074, 3, -323, "494" }, | |
#endif | |
/* -1.0 is end marker. */ | |
{ -1.0, 0, 0, "" } | |
}; | |
static testcase fcvt_tests[] = | |
{ | |
{ 0.0, 0, 1, "0" }, | |
{ 10.0, 0, 2, "10" }, | |
{ 10.0, 1, 2, "100" }, | |
{ 10.0, 4, 2, "100000" }, | |
{ -12.0, 5, 2, "1200000" }, | |
{ 0.2, 4, 0, "2000" }, | |
{ 0.02, 4, -1, "200" }, | |
{ 5.5, 1, 1, "55" }, | |
{ 5.5, 0, 1, "6" }, | |
{ 0.01, 2, -1, "1" }, | |
{ 100.0, -2, 3, "100" }, | |
{ 100.0, -5, 3, "100" }, | |
{ 100.0, -4, 3, "100" }, | |
{ 100.01, -4, 3, "100" }, | |
{ 123.01, -4, 3, "100" }, | |
{ 126.71, -4, 3, "100" }, | |
{ 322.5, 16, 3, "3225000000000000000" }, | |
/* -1.0 is end marker. */ | |
{ -1.0, 0, 0, "" } | |
}; | |
static void | |
output_error (const char *name, double value, int ndigit, | |
const char *exp_p, int exp_decpt, int exp_sign, | |
char *res_p, int res_decpt, int res_sign) | |
{ | |
printf ("%s returned wrong result for value: %f, ndigits: %d\n", | |
name, value, ndigit); | |
printf ("Result was p: \"%s\", decpt: %d, sign: %d\n", | |
res_p, res_decpt, res_sign); | |
printf ("Should be p: \"%s\", decpt: %d, sign: %d\n", | |
exp_p, exp_decpt, exp_sign); | |
++error_count; | |
} | |
static void | |
output_r_error (const char *name, double value, int ndigit, | |
const char *exp_p, int exp_decpt, int exp_sign, int exp_return, | |
char *res_p, int res_decpt, int res_sign, int res_return) | |
{ | |
printf ("%s returned wrong result for value: %f, ndigits: %d\n", | |
name, value, ndigit); | |
printf ("Result was buf: \"%s\", decpt: %d, sign: %d return value: %d\n", | |
res_p, res_decpt, res_sign, res_return); | |
printf ("Should be buf: \"%s\", decpt: %d, sign: %d\n", | |
exp_p, exp_decpt, exp_sign); | |
++error_count; | |
} | |
static void | |
test (testcase tests[], efcvt_func efcvt, const char *name) | |
{ | |
int no = 0; | |
int decpt, sign; | |
char *p; | |
while (tests[no].value != -1.0) | |
{ | |
p = efcvt (tests[no].value, tests[no].ndigit, &decpt, &sign); | |
if (decpt != tests[no].decpt | |
|| sign != (tests[no].value < 0) | |
|| strcmp (p, tests[no].result) != 0) | |
output_error (name, tests[no].value, tests[no].ndigit, | |
tests[no].result, tests[no].decpt, | |
(tests[no].value < 0), | |
p, decpt, sign); | |
++no; | |
} | |
} | |
static void | |
test_r (testcase tests[], efcvt_r_func efcvt_r, const char *name) | |
{ | |
int no = 0; | |
int decpt, sign, res; | |
char buf [1024]; | |
while (tests[no].value != -1.0) | |
{ | |
res = efcvt_r (tests[no].value, tests[no].ndigit, &decpt, &sign, | |
buf, sizeof (buf)); | |
if (res != 0 | |
|| decpt != tests[no].decpt | |
|| sign != (tests[no].value < 0) | |
|| strcmp (buf, tests[no].result) != 0) | |
output_r_error (name, tests[no].value, tests[no].ndigit, | |
tests[no].result, tests[no].decpt, 0, | |
(tests[no].value < 0), | |
buf, decpt, sign, res); | |
++no; | |
} | |
} | |
static void | |
special (void) | |
{ | |
int decpt, sign, res; | |
char *p; | |
char buf [1024]; | |
p = ecvt (NAN, 10, &decpt, &sign); | |
if (sign != 0 || strcmp (p, "nan") != 0) | |
output_error ("ecvt", NAN, 10, "nan", 0, 0, p, decpt, sign); | |
p = ecvt (INFINITY, 10, &decpt, &sign); | |
if (sign != 0 || strcmp (p, "inf") != 0) | |
output_error ("ecvt", NAN, 10, "inf", 0, 0, p, decpt, sign); | |
/* Simply make sure these calls with large NDIGITs don't crash. */ | |
(void) ecvt (123.456, 10000, &decpt, &sign); | |
(void) fcvt (123.456, 10000, &decpt, &sign); | |
/* Some tests for for the reentrant functions. */ | |
/* Use a too small buffer. */ | |
res = ecvt_r (123.456, 10, &decpt, &sign, buf, 1); | |
if (res == 0) | |
{ | |
printf ("ecvt_r with a too small buffer was succesful.\n"); | |
++error_count; | |
} | |
res = fcvt_r (123.456, 10, &decpt, &sign, buf, 1); | |
if (res == 0) | |
{ | |
printf ("fcvt_r with a too small buffer was succesful.\n"); | |
++error_count; | |
} | |
} | |
int | |
main (void) | |
{ | |
test (ecvt_tests, ecvt, "ecvt"); | |
test (fcvt_tests, fcvt, "fcvt"); | |
test_r (ecvt_tests, ecvt_r, "ecvt_r"); | |
test_r (fcvt_tests, fcvt_r, "fcvt_r"); | |
special (); | |
return error_count; | |
} |