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Message-ID: <530261068B3547C5A40104AC03005B28@H270>
Date: Wed, 11 Dec 2019 10:55:01 +0100
From: "Stefan Kanthak" <stefan.kanthak@...go.de>
To: <musl@...ts.openwall.com>
Subject: [PATCH] fdim(), fdimf() and fdiml() radically simplified
Yet another optimisation/simplification in the math subtree.
JFTR: I'm NOT subscribed to your mailing list, so CC: me in replies!
--- -/src/math/fdim.c
+++ +/src/math/fdim.c
@@ -3,8 +3,4 @@
double fdim(double x, double y)
{
- if (isnan(x))
- return x;
- if (isnan(y))
- return y;
- return x > y ? x - y : 0;
+ return x <= y ? 0.0 : x - y;
}
--- -/src/math/fdimf.c
+++ +/src/math/fdimf.c
@@ -3,8 +3,4 @@
float fdimf(float x, float y)
{
- if (isnan(x))
- return x;
- if (isnan(y))
- return y;
- return x > y ? x - y : 0;
+ return x <= y ? 0.0 : x - y;
}
--- -/src/math/fdiml.c
+++ +/src/math/fdiml.c
@@ -10,8 +10,4 @@
long double fdiml(long double x, long double y)
{
- if (isnan(x))
- return x;
- if (isnan(y))
- return y;
- return x > y ? x - y : 0;
+ return x <= y ? 0.0 : x - y;
}
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