Merge commit 'refs/top-bases/t/hurdsig-boot-fix' into t/hurdsig-boot-fix

1 files changed, 48 insertions, 0 deletions

diff --git a/math/w_tgammaf_compat.c b/math/w_tgammaf_compat.c
new file mode 100644
index 0000000000..e9ffddb796
--- /dev/null
+++ b/math/w_tgammaf_compat.c
@@ -0,0 +1,48 @@
+/* w_gammaf.c -- float version of w_gamma.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.
+ * ====================================================
+ */
+
+#include <errno.h>
+#include <math.h>
+#include <math_private.h>
+#include <math-svid-compat.h>
+#include <libm-alias-float.h>
+
+#if LIBM_SVID_COMPAT
+float
+__tgammaf(float x)
+{
+	int local_signgam;
+	float y = __ieee754_gammaf_r(x,&local_signgam);
+
+	if(__glibc_unlikely (!isfinite (y) || y == 0)
+	   && (isfinite (x) || (isinf (x) && x < 0.0))
+	   && _LIB_VERSION != _IEEE_) {
+	  if (x == (float)0.0)
+	    /* tgammaf pole */
+	    return __kernel_standard_f(x, x, 150);
+	  else if(__floorf(x)==x&&x<0.0f)
+	    /* tgammaf domain */
+	    return __kernel_standard_f(x, x, 141);
+	  else if (y == 0)
+	    /* tgammaf underflow */
+	    __set_errno (ERANGE);
+	  else
+	    /* tgammaf overflow */
+	    return __kernel_standard_f(x, x, 140);
+	}
+	return local_signgam < 0 ? - y : y;
+}
+libm_alias_float (__tgamma, tgamma)
+#endif