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Diffstat (limited to 'newlib/libm/common/s_modf.c')
-rw-r--r--newlib/libm/common/s_modf.c131
1 files changed, 0 insertions, 131 deletions
diff --git a/newlib/libm/common/s_modf.c b/newlib/libm/common/s_modf.c
deleted file mode 100644
index 2e9bfb125..000000000
--- a/newlib/libm/common/s_modf.c
+++ /dev/null
@@ -1,131 +0,0 @@
-
-/* @(#)s_modf.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
- <<modf>>, <<modff>>---split fractional and integer parts
-
-INDEX
- modf
-INDEX
- modff
-
-ANSI_SYNOPSIS
- #include <math.h>
- double modf(double <[val]>, double *<[ipart]>);
- float modff(float <[val]>, float *<[ipart]>);
-
-TRAD_SYNOPSIS
- #include <math.h>
- double modf(<[val]>, <[ipart]>)
- double <[val]>;
- double *<[ipart]>;
-
- float modff(<[val]>, <[ipart]>)
- float <[val]>;
- float *<[ipart]>;
-
-DESCRIPTION
- <<modf>> splits the double <[val]> apart into an integer part
- and a fractional part, returning the fractional part and
- storing the integer part in <<*<[ipart]>>>. No rounding
- whatsoever is done; the sum of the integer and fractional
- parts is guaranteed to be exactly equal to <[val]>. That
- is, if <[realpart]> = modf(<[val]>, &<[intpart]>); then
- `<<<[realpart]>+<[intpart]>>>' is the same as <[val]>.
- <<modff>> is identical, save that it takes and returns
- <<float>> rather than <<double>> values.
-
-RETURNS
- The fractional part is returned. Each result has the same
- sign as the supplied argument <[val]>.
-
-PORTABILITY
- <<modf>> is ANSI C. <<modff>> is an extension.
-
-QUICKREF
- modf ansi pure
- modff - pure
-
-*/
-
-/*
- * modf(double x, double *iptr)
- * return fraction part of x, and return x's integral part in *iptr.
- * Method:
- * Bit twiddling.
- *
- * Exception:
- * No exception.
- */
-
-#include "fdlibm.h"
-
-#ifndef _DOUBLE_IS_32BITS
-
-#ifdef __STDC__
-static const double one = 1.0;
-#else
-static double one = 1.0;
-#endif
-
-#ifdef __STDC__
- double modf(double x, double *iptr)
-#else
- double modf(x, iptr)
- double x,*iptr;
-#endif
-{
- __int32_t i0,i1,j0;
- __uint32_t i;
- EXTRACT_WORDS(i0,i1,x);
- j0 = ((i0>>20)&0x7ff)-0x3ff; /* exponent of x */
- if(j0<20) { /* integer part in high x */
- if(j0<0) { /* |x|<1 */
- INSERT_WORDS(*iptr,i0&0x80000000,0); /* *iptr = +-0 */
- return x;
- } else {
- i = (0x000fffff)>>j0;
- if(((i0&i)|i1)==0) { /* x is integral */
- __uint32_t high;
- *iptr = x;
- GET_HIGH_WORD(high,x);
- INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */
- return x;
- } else {
- INSERT_WORDS(*iptr,i0&(~i),0);
- return x - *iptr;
- }
- }
- } else if (j0>51) { /* no fraction part */
- __uint32_t high;
- *iptr = x*one;
- GET_HIGH_WORD(high,x);
- INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */
- return x;
- } else { /* fraction part in low x */
- i = ((__uint32_t)(0xffffffff))>>(j0-20);
- if((i1&i)==0) { /* x is integral */
- __uint32_t high;
- *iptr = x;
- GET_HIGH_WORD(high,x);
- INSERT_WORDS(x,high&0x80000000,0); /* return +-0 */
- return x;
- } else {
- INSERT_WORDS(*iptr,i0,i1&(~i));
- return x - *iptr;
- }
- }
-}
-
-#endif /* _DOUBLE_IS_32BITS */