first commit of the new libm!

[musl] / src / math / s_logb.c

diff --git a/src/math/s_logb.c b/src/math/s_logb.c
deleted file mode 100644 (file)
index be399c7..0000000
--- a/src/math/s_logb.c
+++ /dev/null
@@ -1,34 +0,0 @@
-/* @(#)s_logb.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.
- * ====================================================
- */
-
-/*
- * double logb(x)
- * IEEE 754 logb. Included to pass IEEE test suite. Not recommend.
- * Use ilogb instead.
- */
-
-#include <math.h>
-#include "math_private.h"
-
-double
-logb(double x)
-{
-        int32_t lx,ix;
-        EXTRACT_WORDS(ix,lx,x);
-        ix &= 0x7fffffff;                       /* high |x| */
-        if((ix|lx)==0) return -1.0/fabs(x);
-        if(ix>=0x7ff00000) return x*x;
-        if((ix>>=20)==0)                        /* IEEE 754 logb */
-                return -1022.0;
-        else
-                return (double) (ix-1023);
-}