From 65b14bcee2da7f56299357d1dab9f0ab986c2255 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Tue, 25 Aug 2009 16:46:34 -0700
Subject: Optimize out duplicated scalbln code for x86-64.

---
 sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c | 68 --------------------------
 sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c  | 68 ++++++++++++++++++++++++++
 2 files changed, 68 insertions(+), 68 deletions(-)
 delete mode 100644 sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c
 create mode 100644 sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c

(limited to 'sysdeps/ieee754')

diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c
deleted file mode 100644
index 25b283f..0000000
--- a/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/* @(#)s_scalbn.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.
- * ====================================================
- */
-
-/*
- * scalbn (double x, int n)
- * scalbn(x,n) returns x* 2**n  computed by  exponent
- * manipulation rather than by actually performing an
- * exponentiation or a multiplication.
- */
-
-#include "math.h"
-#include "math_private.h"
-
-#ifdef __STDC__
-static const double
-#else
-static double
-#endif
-two54   =  1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
-twom54  =  5.55111512312578270212e-17, /* 0x3C900000, 0x00000000 */
-huge   = 1.0e+300,
-tiny   = 1.0e-300;
-
-#ifdef __STDC__
-	double __scalbln (double x, long int n)
-#else
-	double __scalbln (x,n)
-	double x; long int n;
-#endif
-{
-	int64_t ix;
-	int64_t k;
-	EXTRACT_WORDS64(ix,x);
-	k = (ix >> 52) & 0x7ff;			/* extract exponent */
-	if (k==0) {				/* 0 or subnormal x */
-	    if ((ix & UINT64_C(0xfffffffffffff))==0) return x; /* +-0 */
-	    x *= two54;
-	    EXTRACT_WORDS64(ix,x);
-	    k = ((ix >> 52) & 0x7ff) - 54;
-	    }
-	if (k==0x7ff) return x+x;		/* NaN or Inf */
-	k = k+n;
-	if (n> 50000 || k >  0x7fe)
-	  return huge*__copysign(huge,x); /* overflow  */
-	if (n< -50000) return tiny*__copysign(tiny,x); /*underflow*/
-	if (k > 0)				/* normal result */
-	    {INSERT_WORDS64(x,(ix&UINT64_C(0x800fffffffffffff))|(k<<52));
-	      return x;}
-	if (k <= -54)
-	  return tiny*__copysign(tiny,x);	/*underflow*/
-	k += 54;				/* subnormal result */
-	INSERT_WORDS64(x,(ix&INT64_C(0x800fffffffffffff))|(k<<52));
-	return x*twom54;
-}
-weak_alias (__scalbln, scalbln)
-#ifdef NO_LONG_DOUBLE
-strong_alias (__scalbln, __scalblnl)
-weak_alias (__scalbln, scalblnl)
-#endif
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c
new file mode 100644
index 0000000..25cf3b1
--- /dev/null
+++ b/sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c
@@ -0,0 +1,68 @@
+/* @(#)s_scalbn.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.
+ * ====================================================
+ */
+
+/*
+ * scalbn (double x, int n)
+ * scalbn(x,n) returns x* 2**n  computed by  exponent
+ * manipulation rather than by actually performing an
+ * exponentiation or a multiplication.
+ */
+
+#include "math.h"
+#include "math_private.h"
+
+#ifdef __STDC__
+static const double
+#else
+static double
+#endif
+two54   =  1.80143985094819840000e+16, /* 0x43500000, 0x00000000 */
+twom54  =  5.55111512312578270212e-17, /* 0x3C900000, 0x00000000 */
+huge   = 1.0e+300,
+tiny   = 1.0e-300;
+
+#ifdef __STDC__
+	double __scalbn (double x, int n)
+#else
+	double __scalbn (x,n)
+	double x; int n;
+#endif
+{
+	int64_t ix;
+	int64_t k;
+	EXTRACT_WORDS64(ix,x);
+	k = (ix >> 52) & 0x7ff;			/* extract exponent */
+	if (k==0) {				/* 0 or subnormal x */
+	    if ((ix & UINT64_C(0xfffffffffffff))==0) return x; /* +-0 */
+	    x *= two54;
+	    EXTRACT_WORDS64(ix,x);
+	    k = ((ix >> 52) & 0x7ff) - 54;
+	    }
+	if (k==0x7ff) return x+x;		/* NaN or Inf */
+	k = k+n;
+	if (n> 50000 || k >  0x7fe)
+	  return huge*__copysign(huge,x); /* overflow  */
+	if (n< -50000) return tiny*__copysign(tiny,x); /*underflow*/
+	if (k > 0)				/* normal result */
+	    {INSERT_WORDS64(x,(ix&UINT64_C(0x800fffffffffffff))|(k<<52));
+	      return x;}
+	if (k <= -54)
+	  return tiny*__copysign(tiny,x);	/*underflow*/
+	k += 54;				/* subnormal result */
+	INSERT_WORDS64(x,(ix&INT64_C(0x800fffffffffffff))|(k<<52));
+	return x*twom54;
+}
+weak_alias (__scalbn, scalbn)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__scalbn, __scalbnl)
+weak_alias (__scalbn, scalbnl)
+#endif
-- 
cgit v1.1