From f95a4a932476be2ba99e2fd081e8d2bc6ea12813 Mon Sep 17 00:00:00 2001
From: PikalaxALT <pikalaxalt@gmail.com>
Date: Fri, 15 Dec 2017 09:38:53 -0500
Subject: Import newlib and create makefile

---
 newlib/libm/math/s_isinf.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 newlib/libm/math/s_isinf.c

(limited to 'newlib/libm/math/s_isinf.c')

diff --git a/newlib/libm/math/s_isinf.c b/newlib/libm/math/s_isinf.c
new file mode 100644
index 0000000..87f0995
--- /dev/null
+++ b/newlib/libm/math/s_isinf.c
@@ -0,0 +1,26 @@
+/*
+ * isinf(x) returns 1 if x is infinity, else 0;
+ * no branching!
+ * Added by Cygnus Support.
+ */
+
+#include "fdlibm.h"
+
+#ifndef _DOUBLE_IS_32BITS
+
+#ifdef __STDC__
+	int isinf(double x)
+#else
+	int isinf(x)
+	double x;
+#endif
+{
+	__int32_t hx,lx;
+	EXTRACT_WORDS(hx,lx,x);
+	hx &= 0x7fffffff;
+	hx |= (__uint32_t)(lx|(-lx))>>31;	
+	hx = 0x7ff00000 - hx;
+	return 1 - (int)((__uint32_t)(hx|(-hx))>>31);
+}
+
+#endif /* _DOUBLE_IS_32BITS */
-- 
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