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Diffstat (limited to 'newlib/libm/mathfp/s_frexp.c')
-rw-r--r--newlib/libm/mathfp/s_frexp.c110
1 files changed, 0 insertions, 110 deletions
diff --git a/newlib/libm/mathfp/s_frexp.c b/newlib/libm/mathfp/s_frexp.c
deleted file mode 100644
index 6145c472f..000000000
--- a/newlib/libm/mathfp/s_frexp.c
+++ /dev/null
@@ -1,110 +0,0 @@
-
-/* @(#)z_frexp.c 1.0 98/08/13 */
-
-/*
-FUNCTION
- <<frexp>>, <<frexpf>>---split floating-point number
-INDEX
- frexp
-INDEX
- frexpf
-
-ANSI_SYNOPSIS
- #include <math.h>
- double frexp(double <[val]>, int *<[exp]>);
- float frexpf(float <[val]>, int *<[exp]>);
-
-TRAD_SYNOPSIS
- #include <math.h>
- double frexp(<[val]>, <[exp]>)
- double <[val]>;
- int *<[exp]>;
-
- float frexpf(<[val]>, <[exp]>)
- float <[val]>;
- int *<[exp]>;
-
-
-DESCRIPTION
- All non zero, normal numbers can be described as <[m]> * 2**<[p]>.
- <<frexp>> represents the double <[val]> as a mantissa <[m]>
- and a power of two <[p]>. The resulting mantissa will always
- be greater than or equal to <<0.5>>, and less than <<1.0>> (as
- long as <[val]> is nonzero). The power of two will be stored
- in <<*>><[exp]>.
-
-@ifinfo
-<[m]> and <[p]> are calculated so that
-<[val]> is <[m]> times <<2>> to the power <[p]>.
-@end ifinfo
-@tex
-<[m]> and <[p]> are calculated so that
-$ val = m \times 2^p $.
-@end tex
-
-<<frexpf>> is identical, other than taking and returning
-floats rather than doubles.
-
-RETURNS
-<<frexp>> returns the mantissa <[m]>. If <[val]> is <<0>>, infinity,
-or Nan, <<frexp>> will set <<*>><[exp]> to <<0>> and return <[val]>.
-
-PORTABILITY
-<<frexp>> is ANSI.
-<<frexpf>> is an extension.
-
-
-*/
-
-/*****************************************************************
- * frexp
- *
- * Input:
- * d - floating point value
- * exp - exponent value
- *
- * Output:
- * A floating point value in the range [0.5, 1).
- *
- * Description:
- * This routine breaks a floating point value into a number f and
- * an exponent exp such that d = f * 2 ^ exp.
- *
- *****************************************************************/
-
-#include "fdlibm.h"
-#include "zmath.h"
-
-#ifndef _DOUBLE_IS_32BITS
-
-double frexp (double d, int *exp)
-{
- double f;
- __uint32_t hd, ld, hf, lf;
-
- EXTRACT_WORDS (hd, ld, d);
-
- /* Get the exponent. */
- *exp = ((hd & 0x7ff00000) >> 20) - 1022;
-
- /* Get the mantissa. */
- lf = ld;
- hf = hd & 0x800fffff;
- hf |= 0x3fe00000;
-
- INSERT_WORDS (f, hf, lf);
-
- /* Check for special values. */
- switch (numtest (f))
- {
- case NAN:
- case INF:
- errno = EDOM;
- *exp = 0;
- return (f);
- }
-
- return (f);
-}
-
-#endif /* _DOUBLE_IS_32BITS */