gcc/tests/smoke-test/quad.c

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#include <quadmath.h>
#include <stdlib.h>
#include <stdio.h>
int
main (void)
{
__float128 r = strtoflt128 ("1.23456789", NULL);
int prec = 20;
int width = 46;
char buf[128];
r = 2.0q;
r = sqrtq (r);
int n = quadmath_snprintf (buf, sizeof buf, "%+-#*.20Qe", width, r);
if ((size_t) n < sizeof buf)
/* Prints: +1.41421356237309504880e+00 */
printf ("%s\n", buf);
quadmath_snprintf (buf, sizeof buf, "%Qa", r);
if ((size_t) n < sizeof buf)
/* Prints: 0x1.6a09e667f3bcc908b2fb1366ea96p+0 */
printf ("%s\n", buf);
n = quadmath_snprintf (NULL, 0, "%+-#46.*Qe", prec, r);
if (n > -1)
{
char *str = malloc (n + 1);
if (str)
{
quadmath_snprintf (str, n + 1, "%+-#46.*Qe", prec, r);
/* Prints: +1.41421356237309504880e+00 */
printf ("%s\n", str);
}
free (str);
}
return 0;
}