1 files changed, 76 insertions, 0 deletions
diff --git a/newlib/libm/math/wr_gamma.c b/newlib/libm/math/wr_gamma.c
new file mode 100644
index 00000000000..0092ed02c77
--- /dev/null
+++ b/newlib/libm/math/wr_gamma.c
@@ -0,0 +1,76 @@
+
+/* @(#)wr_gamma.c 5.1 93/09/24 */
+/*
+ * ====================================================
+ * 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.
+ * ====================================================
+ */
+
+/* 
+ * wrapper double gamma_r(double x, int *signgamp)
+ */
+
+#include "fdlibm.h"
+#include <errno.h>
+
+#ifndef _DOUBLE_IS_32BITS
+
+#ifdef __STDC__
+	double gamma_r(double x, int *signgamp) /* wrapper lgamma_r */
+#else
+	double gamma_r(x,signgamp)              /* wrapper lgamma_r */
+	double x; int *signgamp;
+#endif
+{
+#ifdef _IEEE_LIBM
+	return __ieee754_gamma_r(x,signgamp);
+#else
+        double y;
+	struct exception exc;
+        y = __ieee754_gamma_r(x,signgamp);
+        if(_LIB_VERSION == _IEEE_) return y;
+        if(!finite(y)&&finite(x)) {
+#ifndef HUGE_VAL 
+#define HUGE_VAL inf
+	    double inf = 0.0;
+
+	    SET_HIGH_WORD(inf,0x7ff00000);	/* set inf to infinite */
+#endif
+	    exc.name = "gamma";
+	    exc.err = 0;
+	    exc.arg1 = exc.arg2 = (double)x;
+            if (_LIB_VERSION == _SVID_)
+                exc.retval = HUGE;
+            else
+                exc.retval = HUGE_VAL;
+            if(floor(x)==x&&x<=0.0) {
+		/* gamma(-integer) or gamma(0) */
+		exc.type = SING;
+		if (_LIB_VERSION == _POSIX_)
+		  errno = EDOM;
+		else if (!matherr(&exc)) {
+		  errno = EDOM;
+		}
+            } else {
+		/* gamma(finite) overflow */
+		exc.type = OVERFLOW;
+                if (_LIB_VERSION == _POSIX_)
+		  errno = ERANGE;
+                else if (!matherr(&exc)) {
+                  errno = ERANGE;
+                }
+            }
+	    if (exc.err != 0)
+	       errno = exc.err;
+	    return exc.retval; 
+        } else
+            return y;
+#endif
+}
+
+#endif /* defined(_DOUBLE_IS_32BITS) */