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authorUlrich Drepper <drepper@gmail.com>2011-10-12 11:27:51 -0400
committerUlrich Drepper <drepper@gmail.com>2011-10-12 11:27:51 -0400
commit0ac5ae2335292908f39031b1ea9fe8edce433c0f (patch)
treef9d26c8abc0de39d18d4c13e70f6022cdc6b461f /sysdeps/ieee754/dbl-64/e_acosh.c
parenta843a204a3e8a0dd53584dad3668771abaec84ac (diff)
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Optimize libm
libm is now somewhat integrated with gcc's -ffinite-math-only option
and lots of the wrapper functions have been optimized.
Diffstat (limited to 'sysdeps/ieee754/dbl-64/e_acosh.c')
-rw-r--r--sysdeps/ieee754/dbl-64/e_acosh.c29
1 files changed, 9 insertions, 20 deletions
diff --git a/sysdeps/ieee754/dbl-64/e_acosh.c b/sysdeps/ieee754/dbl-64/e_acosh.c
index 27c29cd8c9..f474e9ab5c 100644
--- a/sysdeps/ieee754/dbl-64/e_acosh.c
+++ b/sysdeps/ieee754/dbl-64/e_acosh.c
@@ -5,18 +5,14 @@
  *
  * Developed at SunPro, a Sun Microsystems, Inc. business.
  * Permission to use, copy, modify, and distribute this
- * software is freely granted, provided that this notice 
+ * software is freely granted, provided that this notice
  * is preserved.
  * ====================================================
  */
 
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: e_acosh.c,v 1.9 1995/05/12 04:57:18 jtc Exp $";
-#endif
-
 /* __ieee754_acosh(x)
  * Method :
- *	Based on 
+ *	Based on
  *		acosh(x) = log [ x + sqrt(x*x-1) ]
  *	we have
  *		acosh(x) := log(x)+ln2,	if x is large; else
@@ -31,21 +27,13 @@ static char rcsid[] = "$NetBSD: e_acosh.c,v 1.9 1995/05/12 04:57:18 jtc Exp $";
 #include "math.h"
 #include "math_private.h"
 
-#ifdef __STDC__
-static const double 
-#else
-static double 
-#endif
+static const double
 one	= 1.0,
 ln2	= 6.93147180559945286227e-01;  /* 0x3FE62E42, 0xFEFA39EF */
 
-#ifdef __STDC__
-	double __ieee754_acosh(double x)
-#else
-	double __ieee754_acosh(x)
-	double x;
-#endif
-{	
+double
+__ieee754_acosh(double x)
+{
 	double t;
 	int32_t hx;
 	u_int32_t lx;
@@ -54,8 +42,8 @@ ln2	= 6.93147180559945286227e-01;  /* 0x3FE62E42, 0xFEFA39EF */
 	    return (x-x)/(x-x);
 	} else if(hx >=0x41b00000) {	/* x > 2**28 */
 	    if(hx >=0x7ff00000) {	/* x is inf of NaN */
-	        return x+x;
-	    } else 
+		return x+x;
+	    } else
 		return __ieee754_log(x)+ln2;	/* acosh(huge)=log(2x) */
 	} else if(((hx-0x3ff00000)|lx)==0) {
 	    return 0.0;			/* acosh(1) = 0 */
@@ -67,3 +55,4 @@ ln2	= 6.93147180559945286227e-01;  /* 0x3FE62E42, 0xFEFA39EF */
 	    return __log1p(t+__sqrt(2.0*t+t*t));
 	}
 }
+strong_alias (__ieee754_acosh, __acosh_finite)