1 files changed, 33 insertions, 0 deletions
diff --git a/src/math/s_copysignf.c b/src/math/s_copysignf.c
new file mode 100644
index 00000000..d650e8e5
--- /dev/null
+++ b/src/math/s_copysignf.c
@@ -0,0 +1,33 @@
+/* s_copysignf.c -- float version of s_copysign.c.
+ * Conversion to float by Ian Lance Taylor, Cygnus Support, ian@cygnus.com.
+ */
+
+/*
+ * ====================================================
+ * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Developed at SunPro, a Sun Microsystems, Inc. business.
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice
+ * is preserved.
+ * ====================================================
+ */
+
+/*
+ * copysignf(float x, float y)
+ * copysignf(x,y) returns a value with the magnitude of x and
+ * with the sign bit of y.
+ */
+
+#include <math.h>
+#include "math_private.h"
+
+float
+copysignf(float x, float y)
+{
+        uint32_t ix,iy;
+        GET_FLOAT_WORD(ix,x);
+        GET_FLOAT_WORD(iy,y);
+        SET_FLOAT_WORD(x,(ix&0x7fffffff)|(iy&0x80000000));
+        return x;
+}