[v5,11/12] math: Use fmin/fmax on hypot
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From: Wilco Dijkstra <Wilco.Dijkstra@arm.com>
It optimizes for architectures that provides fast builtins.
Checked on aarch64-linux-gnu.
---
sysdeps/ieee754/dbl-64/e_hypot.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
@@ -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))