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math: Use fmin/fmax on hypot

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It optimizes for architectures that provides fast builtins.

Checked on aarch64-linux-gnu.
This commit is contained in:
Wilco Dijkstra 2021-12-01 11:08:14 -03:00 committed by Adhemerval Zanella
parent ecb94e9587
commit 2f44eef584
1 changed files with 3 additions and 2 deletions
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5
sysdeps/ieee754/dbl-64/e_hypot.c
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@ -38,6 +38,7 @@
#include <math_private.h>
#include <math-underflow.h>
#include <math-narrow-eval.h>
#include <math-use-builtins.h>
#include <libm-alias-finite.h>
#include "math_config.h"
@ -95,8 +96,8 @@ __ieee754_hypot (double x, double y)
x = fabs (x);
y = fabs (y);
double ax = x < y ? y : x;
double ay = x < y ? x : y;
double ax = USE_FMAX_BUILTIN ? fmax (x, y) : (x < y ? y : x);
double ay = USE_FMIN_BUILTIN ? fmin (x, y) : (x < y ? x : y);
/* If ax is huge, scale both inputs down. */
if (__glibc_unlikely (ax > LARGE_VAL))