mirror of
git://sourceware.org/git/newlib-cygwin.git
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048ebea981
Rename s_nearbyint.c, s_fdim.c and s_scalbln.c to remove conflicts
Remove functions that are not needed from above files
Modify include paths
Add includes missing in cygwin build
Add missing types
Create Makefiles
Create header files to resolve dependencies between directories
Modify some instances of unsigned long to uint64_t for 32 bit platforms
Add HAVE_FPMATH_H
71 lines
2.5 KiB
C
71 lines
2.5 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2005 David Schultz <das@FreeBSD.ORG>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#include <limits.h>
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#include <fenv.h>
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#include <math.h>
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#ifndef type
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__FBSDID("$FreeBSD$");
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#define type double
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#define roundit round
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#define dtype long
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#define DTYPE_MIN LONG_MIN
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#define DTYPE_MAX LONG_MAX
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#define fn lround
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#endif
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/*
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* If type has more precision than dtype, the endpoints dtype_(min|max) are
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* of the form xxx.5; they are "out of range" because lround() rounds away
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* from 0. On the other hand, if type has less precision than dtype, then
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* all values that are out of range are integral, so we might as well assume
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* that everything is in range. At compile time, INRANGE(x) should reduce to
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* two floating-point comparisons in the former case, or TRUE otherwise.
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*/
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static const type type_min = (type)DTYPE_MIN;
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static const type type_max = (type)DTYPE_MAX;
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static const type dtype_min = (type)DTYPE_MIN - 0.5;
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static const type dtype_max = (type)DTYPE_MAX + 0.5;
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#define INRANGE(x) (dtype_max - type_max != 0.5 || \
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((x) > dtype_min && (x) < dtype_max))
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dtype
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fn(type x)
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{
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if (INRANGE(x)) {
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x = roundit(x);
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return ((dtype)x);
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} else {
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feraiseexcept(FE_INVALID);
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return (DTYPE_MAX);
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}
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}
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