Optimize libm

[thirdparty/glibc.git] / sysdeps / ieee754 / ldbl-128ibm / e_atanhl.c

diff --git a/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c b/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c
index a801bd6f7459b81908c8f18f3bc562f7c078277e..c879e4518ea6075261f9c5e37113ca1cf12edb41 100644 (file)
--- a/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c
@@ -10,10 +10,6 @@
  * ====================================================
  */
 
-#if defined(LIBM_SCCS) && !defined(lint)
-static char rcsid[] = "$NetBSD: e_atanh.c,v 1.8 1995/05/10 20:44:55 jtc Exp $";
-#endif
-
 /* __ieee754_atanh(x)
  * Method :
  *    1.Reduced x to positive by atanh(-x) = -atanh(x)
@@ -22,7 +18,7 @@ static char rcsid[] = "$NetBSD: e_atanh.c,v 1.8 1995/05/10 20:44:55 jtc Exp $";
  *     atanh(x) = --- * log(1 + -------) = 0.5 * log1p(2 * --------)
  *                  2             1 - x                      1 - x
  *
- *     For x<0.5
+ *     For x<0.5
  *     atanh(x) = 0.5*log1p(2x+2x*x/(1-x))
  *
  * Special cases:
@@ -35,24 +31,12 @@ static char rcsid[] = "$NetBSD: e_atanh.c,v 1.8 1995/05/10 20:44:55 jtc Exp $";
 #include "math.h"
 #include "math_private.h"
 
-#ifdef __STDC__
 static const long double one = 1.0L, huge = 1e300L;
-#else
-static long double one = 1.0L, huge = 1e300L;
-#endif
 
-#ifdef __STDC__
 static const long double zero = 0.0L;
-#else
-static long double zero = 0.0L;
-#endif
 
-#ifdef __STDC__
-       long double __ieee754_atanhl(long double x)
-#else
-       long double __ieee754_atanhl(x)
-       long double x;
-#endif
+long double
+__ieee754_atanhl(long double x)
 {
        long double t;
        int64_t hx,ix;
@@ -61,7 +45,7 @@ static long double zero = 0.0L;
        ix = hx&0x7fffffffffffffffLL;
        if (ix >= 0x3ff0000000000000LL) { /* |x|>=1 */
            if (ix > 0x3ff0000000000000LL)
-               return (x-x)/(x-x);
+               return (x-x)/(x-x);
            t = fabsl (x);
            if (t > one)
                return (x-x)/(x-x);
@@ -77,3 +61,4 @@ static long double zero = 0.0L;
            t = 0.5*__log1pl((x+x)/(one-x));
        if(hx>=0) return t; else return -t;
 }
+strong_alias (__ieee754_atanhl, __atanhl_finite)