From 48ef7704c03e7e554c05de01bf8d1d70c16cb6f4 Mon Sep 17 00:00:00 2001
From: ProjectRevoTPP <projectrevotpp@hotmail.com>
Date: Wed, 20 Dec 2017 16:34:35 -0500
Subject: add libc building to agbcc.

---
 libc/math/sf_isinf.c | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 libc/math/sf_isinf.c

(limited to 'libc/math/sf_isinf.c')

diff --git a/libc/math/sf_isinf.c b/libc/math/sf_isinf.c
new file mode 100644
index 0000000..1af4aab
--- /dev/null
+++ b/libc/math/sf_isinf.c
@@ -0,0 +1,35 @@
+/*
+ * isinff(x) returns 1 if x is infinity, else 0;
+ * no branching!
+ * Added by Cygnus Support.
+ */
+
+#include "fdlibm.h"
+
+#ifdef __STDC__
+	int isinff(float x)
+#else
+	int isinff(x)
+	float x;
+#endif
+{
+	__int32_t ix;
+	GET_FLOAT_WORD(ix,x);
+	ix &= 0x7fffffff;
+	ix = 0x7f800000 - ix;
+	return 1 - (int)((__uint32_t)(ix|(-ix))>>31);
+}
+
+#ifdef _DOUBLE_IS_32BITS
+
+#ifdef __STDC__
+	int isinf(double x)
+#else
+	int isinf(x)
+	double x;
+#endif
+{
+	return isinff((float) x);
+}
+
+#endif /* defined(_DOUBLE_IS_32BITS) */
-- 
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