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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/ieee754/dbl-64/wordsize-64/s_modf.c | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.xz glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization. zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage directory, REORG.TODO, except for files that will certainly still exist in their current form at top level when we're done (COPYING, COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which are moved to the new directory OldChangeLogs, instead), and the generated file INSTALL (which is just deleted; in the new order, there will be no generated files checked into version control).
Diffstat (limited to 'sysdeps/ieee754/dbl-64/wordsize-64/s_modf.c')
-rw-r--r-- | sysdeps/ieee754/dbl-64/wordsize-64/s_modf.c | 66 |
1 files changed, 0 insertions, 66 deletions
diff --git a/sysdeps/ieee754/dbl-64/wordsize-64/s_modf.c b/sysdeps/ieee754/dbl-64/wordsize-64/s_modf.c deleted file mode 100644 index c309e56272..0000000000 --- a/sysdeps/ieee754/dbl-64/wordsize-64/s_modf.c +++ /dev/null @@ -1,66 +0,0 @@ -/* Rewritten for 64-bit machines by Ulrich Drepper <drepper@gmail.com>. */ -/* - * ==================================================== - * 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. - * ==================================================== - */ - -/* - * 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 <math.h> -#include <math_private.h> -#include <stdint.h> - -static const double one = 1.0; - -double -__modf(double x, double *iptr) -{ - int64_t i0; - int32_t j0; - EXTRACT_WORDS64(i0,x); - j0 = ((i0>>52)&0x7ff)-0x3ff; /* exponent of x */ - if(j0<52) { /* integer part in x */ - if(j0<0) { /* |x|<1 */ - /* *iptr = +-0 */ - INSERT_WORDS64(*iptr,i0&UINT64_C(0x8000000000000000)); - return x; - } else { - uint64_t i = UINT64_C(0x000fffffffffffff)>>j0; - if((i0&i)==0) { /* x is integral */ - *iptr = x; - /* return +-0 */ - INSERT_WORDS64(x,i0&UINT64_C(0x8000000000000000)); - return x; - } else { - INSERT_WORDS64(*iptr,i0&(~i)); - return x - *iptr; - } - } - } else { /* no fraction part */ - *iptr = x*one; - /* We must handle NaNs separately. */ - if (j0 == 0x400 && (i0 & UINT64_C(0xfffffffffffff))) - return x*one; - INSERT_WORDS64(x,i0&UINT64_C(0x8000000000000000)); /* return +-0 */ - return x; - } -} -weak_alias (__modf, modf) -#ifdef NO_LONG_DOUBLE -strong_alias (__modf, __modfl) -weak_alias (__modf, modfl) -#endif |