From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Thu, 12 Jul 2007 18:26:36 +0000
Subject: 2.5-18.1

---
 sysdeps/ieee754/ldbl-128ibm/s_isinfl.c | 35 ++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 sysdeps/ieee754/ldbl-128ibm/s_isinfl.c

(limited to 'sysdeps/ieee754/ldbl-128ibm/s_isinfl.c')

diff --git a/sysdeps/ieee754/ldbl-128ibm/s_isinfl.c b/sysdeps/ieee754/ldbl-128ibm/s_isinfl.c
new file mode 100644
index 0000000..717b574
--- /dev/null
+++ b/sysdeps/ieee754/ldbl-128ibm/s_isinfl.c
@@ -0,0 +1,35 @@
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>.
+ * Change for long double by Jakub Jelinek <jj@ultra.linux.cz>
+ * Public domain.
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/*
+ * isinfl(x) returns 1 if x is inf, -1 if x is -inf, else 0;
+ * no branching!
+ */
+
+#include "math.h"
+#include "math_private.h"
+#include <math_ldbl_opt.h>
+
+int
+___isinfl (long double x)
+{
+	int64_t hx,lx;
+	GET_LDOUBLE_WORDS64(hx,lx,x);
+	lx = (lx & 0x7fffffffffffffffLL);
+	lx |= (hx & 0x7fffffffffffffffLL) ^ 0x7ff0000000000000LL;
+	lx |= -lx;
+	return ~(lx >> 63) & (hx >> 62);
+}
+hidden_ver (___isinfl, __isinfl)
+#ifndef IS_IN_libm
+weak_alias (___isinfl, ____isinfl)
+long_double_symbol (libc, ___isinfl, isinfl);
+long_double_symbol (libc, ____isinfl, __isinfl);
+#endif
-- 
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