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-rw-r--r--sysdeps/libm-ieee754/s_copysignl.c43
1 files changed, 43 insertions, 0 deletions
diff --git a/sysdeps/libm-ieee754/s_copysignl.c b/sysdeps/libm-ieee754/s_copysignl.c
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+++ b/sysdeps/libm-ieee754/s_copysignl.c
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+/* s_copysignl.c -- long double version of s_copysign.c.
+ * Conversion to long double by Ulrich Drepper,
+ * Cygnus Support, drepper@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.
+ * ====================================================
+ */
+
+#if defined(LIBM_SCCS) && !defined(lint)
+static char rcsid[] = "$NetBSD: $";
+#endif
+
+/*
+ * copysignl(long double x, long double y)
+ * copysignl(x,y) returns a value with the magnitude of x and
+ * with the sign bit of y.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+	long double __copysignl(long double x, long double y)
+#else
+	long double __copysignl(x,y)
+	long double x,y;
+#endif
+{
+	u_int32_t es1,es2;
+	GET_LDOUBLE_EXP(es1,x);
+	GET_LDOUBLE_EXP(es2,y);
+	SET_LDOUBLE_EXP(x,(es1&0x7fff)|(es2&0x8000));
+        return x;
+}
+weak_alias (__copysignl, copysignl)