Added Math functions

JerryScript-DCO-1.0-Signed-off-by: Tamas Czene tczene.u-szeged@partner.samsung.com
2015-05-08 13:49:09 +02:00
parent 7d703040d0
commit 7dfbc88cc0
44 changed files with 4647 additions and 388 deletions
@@ -0,0 +1,48 @@
+
+/* @(#)w_exp.c 1.4 04/04/22 */
+/*
+ * ====================================================
+ * Copyright (C) 2004 by Sun Microsystems, Inc. All rights reserved.
+ *
+ * Permission to use, copy, modify, and distribute this
+ * software is freely granted, provided that this notice 
+ * is preserved.
+ * ====================================================
+ */
+
+/* 
+ * wrapper exp(x)
+ */
+
+#include "fdlibm.h"
+
+#ifdef __STDC__
+static const double
+#else
+static double
+#endif
+o_threshold=  7.09782712893383973096e+02,  /* 0x40862E42, 0xFEFA39EF */
+u_threshold= -7.45133219101941108420e+02;  /* 0xc0874910, 0xD52D3051 */
+
+#ifdef __STDC__
+	double exp(double x)		/* wrapper exp */
+#else
+	double exp(x)			/* wrapper exp */
+	double x;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_exp(x);
+#else
+	double z;
+	z = __ieee754_exp(x);
+	if(_LIB_VERSION == _IEEE_) return z;
+	if(finite(x)) {
+	    if(x>o_threshold)
+	        return __kernel_standard(x,x,6); /* exp overflow */
+	    else if(x<u_threshold)
+	        return __kernel_standard(x,x,7); /* exp underflow */
+	} 
+	return z;
+#endif
+}