1 files changed, 58 insertions, 0 deletions
diff --git a/lib/msun/src/w_expf.c b/lib/msun/src/w_expf.c
new file mode 100644
index 0000000..07bd13b
--- /dev/null
+++ b/lib/msun/src/w_expf.c
@@ -0,0 +1,58 @@
+/* w_expf.c -- float version of w_exp.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.
+ * ====================================================
+ */
+
+#ifndef lint
+static char rcsid[] = "$FreeBSD$";
+#endif
+
+/*
+ * wrapper expf(x)
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const float
+#else
+static float
+#endif
+o_threshold=  8.8721679688e+01,  /* 0x42b17180 */
+u_threshold= -1.0397208405e+02;  /* 0xc2cff1b5 */
+
+#ifdef __STDC__
+	float expf(float x)		/* wrapper expf */
+#else
+	float expf(x)			/* wrapper expf */
+	float x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_expf(x);
+#else
+	float z;
+	z = __ieee754_expf(x);
+	if(_LIB_VERSION == _IEEE_) return z;
+	if(finitef(x)) {
+	    if(x>o_threshold)
+	        /* exp overflow */
+	        return (float)__kernel_standard((double)x,(double)x,106);
+	    else if(x<u_threshold)
+	        /* exp underflow */
+	        return (float)__kernel_standard((double)x,(double)x,107);
+	}
+	return z;
+#endif
+}