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/* Test for the long double variants of *printf functions.
Copyright (C) 2019-2025 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
<https://www.gnu.org/licenses/>. */
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <support/capture_subprocess.h>
#include <support/check.h>
static void
do_test_call_varg (FILE *stream, const char *format, ...)
{
char *buffer = NULL;
char string[128];
va_list args;
int ret;
printf ("%15s", "vasprintf: ");
va_start (args, format);
ret = vasprintf (&buffer, format, args);
va_end (args);
if (ret == -1 || buffer == NULL)
printf ("Error using vasprintf\n");
else
{
printf ("%s", buffer);
free (buffer);
}
printf ("\n");
printf ("%15s", "vdprintf: ");
va_start (args, format);
vdprintf (fileno (stream), format, args);
va_end (args);
printf ("\n");
printf ("%15s", "vfprintf: ");
va_start (args, format);
vfprintf (stream, format, args);
va_end (args);
printf ("\n");
printf ("%15s", "vprintf: ");
va_start (args, format);
vprintf (format, args);
va_end (args);
printf ("\n");
printf ("%15s", "vsnprintf: ");
va_start (args, format);
vsnprintf (string, 127, format, args);
va_end (args);
printf ("%s", string);
printf ("\n");
printf ("%15s", "vsprintf: ");
va_start (args, format);
vsprintf (string, format, args);
va_end (args);
printf ("%s", string);
printf ("\n");
}
static void
do_test_call_rarg (FILE *stream, const char *format, long double ld, double d)
{
char *buffer = NULL;
char string[128];
int ret;
printf ("%15s", "asprintf: ");
ret = asprintf (&buffer, format, ld, d);
if (ret == -1 || buffer == NULL)
printf ("Error using asprintf\n");
else
{
printf ("%s", buffer);
free (buffer);
}
printf ("\n");
printf ("%15s", "dprintf: ");
dprintf (fileno (stream), format, ld, d);
printf ("\n");
printf ("%15s", "fprintf: ");
fprintf (stream, format, ld, d);
printf ("\n");
printf ("%15s", "printf: ");
printf (format, ld, d);
printf ("\n");
printf ("%15s", "snprintf: ");
snprintf (string, 127, format, ld, d);
printf ("%s", string);
printf ("\n");
printf ("%15s", "sprintf: ");
sprintf (string, format, ld, d);
printf ("%s", string);
printf ("\n");
}
static void
do_test_call (void)
{
long double ld = -1;
double d = -1;
/* Print in decimal notation. */
do_test_call_rarg (stdout, "%.10Lf, %.10f", ld, d);
do_test_call_varg (stdout, "%.10Lf, %.10f", ld, d);
/* Print in hexadecimal notation. */
do_test_call_rarg (stdout, "%.10La, %.10a", ld, d);
do_test_call_varg (stdout, "%.10La, %.10a", ld, d);
/* Test positional parameters. */
do_test_call_varg (stdout, "%3$Lf, %2$Lf, %1$f",
(double) 1, (long double) 2, (long double) 3);
}
static int
do_test (void)
{
struct support_capture_subprocess result;
result = support_capture_subprocess ((void *) &do_test_call, NULL);
/* Compare against the expected output. */
const char *expected =
" asprintf: -1.0000000000, -1.0000000000\n"
" dprintf: -1.0000000000, -1.0000000000\n"
" fprintf: -1.0000000000, -1.0000000000\n"
" printf: -1.0000000000, -1.0000000000\n"
" snprintf: -1.0000000000, -1.0000000000\n"
" sprintf: -1.0000000000, -1.0000000000\n"
" vasprintf: -1.0000000000, -1.0000000000\n"
" vdprintf: -1.0000000000, -1.0000000000\n"
" vfprintf: -1.0000000000, -1.0000000000\n"
" vprintf: -1.0000000000, -1.0000000000\n"
" vsnprintf: -1.0000000000, -1.0000000000\n"
" vsprintf: -1.0000000000, -1.0000000000\n"
" asprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" dprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" fprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" printf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" snprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" sprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" vasprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" vdprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" vfprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" vprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" vsnprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" vsprintf: -0x1.0000000000p+0, -0x1.0000000000p+0\n"
" vasprintf: 3.000000, 2.000000, 1.000000\n"
" vdprintf: 3.000000, 2.000000, 1.000000\n"
" vfprintf: 3.000000, 2.000000, 1.000000\n"
" vprintf: 3.000000, 2.000000, 1.000000\n"
" vsnprintf: 3.000000, 2.000000, 1.000000\n"
" vsprintf: 3.000000, 2.000000, 1.000000\n";
TEST_COMPARE_STRING (expected, result.out.buffer);
return 0;
}
#include <support/test-driver.c>
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