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Diffstat (limited to 'newlib/libm/common/s_ilogb.c')
-rw-r--r--newlib/libm/common/s_ilogb.c92
1 files changed, 0 insertions, 92 deletions
diff --git a/newlib/libm/common/s_ilogb.c b/newlib/libm/common/s_ilogb.c
deleted file mode 100644
index 4e3e69f12..000000000
--- a/newlib/libm/common/s_ilogb.c
+++ /dev/null
@@ -1,92 +0,0 @@
-
-/* @(#)s_ilogb.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.
- * ====================================================
- */
-
-/*
-FUNCTION
- <<ilogb>>, <<ilogbf>>---get exponent of floating point number
-INDEX
- ilogb
-INDEX
- ilogbf
-
-ANSI_SYNOPSIS
- #include <math.h>
- int ilogb(double <[val]>);
- int ilogbf(float <[val]>);
-
-TRAD_SYNOPSIS
- #include <math.h>
- int ilogb(<[val]>)
- double <[val]>;
-
- int ilogbf(<[val]>)
- float <[val]>;
-
-
-DESCRIPTION
-
- All non zero, normal numbers can be described as <[m]> *
- 2**<[p]>. <<ilogb>> and <<ilogbf>> examine the argument
- <[val]>, and return <[p]>. The functions <<frexp>> and
- <<frexpf>> are similar to <<ilogb>> and <<ilogbf>>, but also
- return <[m]>.
-
-RETURNS
-
-<<ilogb>> and <<ilogbf>> return the power of two used to form the
-floating point argument. If <[val]> is <<0>>, they return <<-
-INT_MAX>> (<<INT_MAX>> is defined in limits.h). If <[val]> is
-infinite, or NaN, they return <<INT_MAX>>.
-
-PORTABILITY
- Neither <<ilogb>> nor <<ilogbf>> is required by ANSI C or by
- the System V Interface Definition (Issue 2). */
-
-/* ilogb(double x)
- * return the binary exponent of non-zero x
- * ilogb(0) = 0x80000001
- * ilogb(inf/NaN) = 0x7fffffff (no signal is raised)
- */
-
-#include "fdlibm.h"
-#include <limits.h>
-
-#ifndef _DOUBLE_IS_32BITS
-
-#ifdef __STDC__
- int ilogb(double x)
-#else
- int ilogb(x)
- double x;
-#endif
-{
- __int32_t hx,lx,ix;
-
- EXTRACT_WORDS(hx,lx,x);
- hx &= 0x7fffffff;
- if(hx<0x00100000) {
- if((hx|lx)==0)
- return - INT_MAX; /* ilogb(0) = 0x80000001 */
- else /* subnormal x */
- if(hx==0) {
- for (ix = -1043; lx>0; lx<<=1) ix -=1;
- } else {
- for (ix = -1022,hx<<=11; hx>0; hx<<=1) ix -=1;
- }
- return ix;
- }
- else if (hx<0x7ff00000) return (hx>>20)-1023;
- else return INT_MAX;
-}
-
-#endif /* _DOUBLE_IS_32BITS */