From 9dd86a2de6541a36889c1253d4dae515aed727fe Mon Sep 17 00:00:00 2001
From: Kaito Sugimoto <7x.rusk@gmail.com>
Date: Mon, 16 Dec 2019 01:37:17 +0900
Subject: [PATCH] math: fix abs (-0.0)

---
 vlib/math/math.v | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/vlib/math/math.v b/vlib/math/math.v
index 286402b0b1..b74dc95597 100644
--- a/vlib/math/math.v
+++ b/vlib/math/math.v
@@ -18,6 +18,7 @@ fn C.erf(x f64) f64
 fn C.erfc(x f64) f64
 fn C.exp(x f64) f64
 fn C.exp2(x f64) f64
+fn C.fabs(x f64) f64
 fn C.floor(x f64) f64
 fn C.fmod(x f64, y f64) f64
 fn C.hypot(x f64, y f64) f64
@@ -42,10 +43,7 @@ fn C.trunc(x f64) f64
 
 // Returns the absolute value.
 pub fn abs(a f64) f64 {
-	if a < 0 {
-		return -a
-	}
-	return a
+	return C.fabs(a)
 }
 
 // acos calculates inverse cosine (arccosine).