From 61a3124ca9bbb6368ec6552a1253b7d1047df2d6 Mon Sep 17 00:00:00 2001
From: Andras Kucsma <andras.kucsma@prezi.com>
Date: Sun, 10 May 2020 18:19:54 +0200
Subject: [PATCH] Identify NANs with isnan()

In C/C++ NAN == NAN is false, so isnan()
must be used to identify NAN values.
---
 implot.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/implot.cpp b/implot.cpp
index 596945b..ef79452 100644
--- a/implot.cpp
+++ b/implot.cpp
@@ -104,7 +104,7 @@ inline float Remap(float x, float x0, float x1, float y0, float y1) {
 
 /// Turns NANs to 0s
 inline float ConstrainNan(float val) {
-    return val == NAN || val == -NAN ? 0 : val;
+    return isnan(val) ? 0 : val;
 }
 
 /// Turns INFINITYs to FLT_MAXs
@@ -119,7 +119,7 @@ inline float ConstrainLog(float val) {
 
 /// Returns true if val is NAN or INFINITY
 inline bool NanOrInf(float val) {
-    return val == INFINITY || val == NAN || val == -INFINITY  || val == -NAN;
+    return val == INFINITY || val == -INFINITY || isnan(val);
 }
 
 /// Utility function to that rounds x to powers of 2,5 and 10 for generating axis labels