From 04be8e84db1cf4f8b2a7bc7679eda4336da75d43 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Fri, 27 Aug 2021 10:52:02 +0900
Subject: Use C99-defined macros to classify a floating-point number

---
 rational.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'rational.c')

diff --git a/rational.c b/rational.c
index 88693d94c4..b79809dc0e 100644
--- a/rational.c
+++ b/rational.c
@@ -2096,7 +2096,7 @@ rb_float_numerator(VALUE self)
 {
     double d = RFLOAT_VALUE(self);
     VALUE r;
-    if (isinf(d) || isnan(d))
+    if (!isfinite(d))
 	return self;
     r = float_to_r(self);
     return nurat_numerator(r);
@@ -2116,7 +2116,7 @@ rb_float_denominator(VALUE self)
 {
     double d = RFLOAT_VALUE(self);
     VALUE r;
-    if (isinf(d) || isnan(d))
+    if (!isfinite(d))
 	return INT2FIX(1);
     r = float_to_r(self);
     return nurat_denominator(r);
-- 
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