summaryrefslogtreecommitdiffstats
path: root/libc-top-half/musl/src/math/fmaxl.c
blob: 4b03158e06292b28576615a2a1dd36bd6bf1d34a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
#include <math.h>
#include <float.h>

#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
long double fmaxl(long double x, long double y)
{
	return fmax(x, y);
}
#else
long double fmaxl(long double x, long double y)
{
	if (isnan(x))
		return y;
	if (isnan(y))
		return x;
	/* handle signed zeros, see C99 Annex F.9.9.2 */
	if (signbit(x) != signbit(y))
		return signbit(x) ? y : x;
	return x < y ? y : x;
}
#endif