No visible API change. Signed-off-by: Chia-I Wu <olvaffe@gmail.com> Reviewed-by: Yiwei Zhang <zzyiwei@chromium.org> Reviewed-by: Ryan Neph <ryanneph@google.com> Acked-by: Gert Wollny <gert.wollny@collabora.com>macos/master
Chia-I Wu
3 years ago
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/* Copyright 2019 Intel Corporation */ |
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/* SPDX-License-Identifier: MIT */ |
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#include "no_extern_c.h" |
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#ifndef _C11_COMPAT_H_ |
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#define _C11_COMPAT_H_ |
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#if defined(__cplusplus) |
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/* This is C++ code, not C */ |
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#elif (__STDC_VERSION__ >= 201112L) |
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/* Already C11 */ |
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#else |
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/*
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* C11 static_assert() macro |
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* assert.h only defines that name for C11 and above |
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*/ |
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#ifndef static_assert |
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#define static_assert _Static_assert |
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#endif |
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#endif /* !C++ && !C11 */ |
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#endif /* _C11_COMPAT_H_ */ |
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@ -0,0 +1,211 @@ |
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/**************************************************************************
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* |
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* Copyright 2007-2015 VMware, Inc. |
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* All Rights Reserved. |
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* |
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* Permission is hereby granted, free of charge, to any person obtaining a |
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* copy of this software and associated documentation files (the |
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* "Software"), to deal in the Software without restriction, including |
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* without limitation the rights to use, copy, modify, merge, publish, |
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* distribute, sub license, and/or sell copies of the Software, and to |
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* permit persons to whom the Software is furnished to do so, subject to |
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* the following conditions: |
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* |
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* The above copyright notice and this permission notice (including the |
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* next paragraph) shall be included in all copies or substantial portions |
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* of the Software. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
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* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR |
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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* |
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**************************************************************************/ |
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/**
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* Wrapper for math.h which makes sure we have definitions of all the c99 |
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* functions. |
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*/ |
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#ifndef _C99_MATH_H_ |
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#define _C99_MATH_H_ |
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#include <math.h> |
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#include "c99_compat.h" |
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/* This is to ensure that we get M_PI, etc. definitions */ |
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#if defined(_MSC_VER) && !defined(_USE_MATH_DEFINES) |
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#error _USE_MATH_DEFINES define required when building with MSVC |
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#endif |
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#if !defined(_MSC_VER) && \ |
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__STDC_VERSION__ < 199901L && \
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(!defined(_XOPEN_SOURCE) || _XOPEN_SOURCE < 600) && \
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!defined(__cplusplus) |
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static inline long int |
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lrint(double d) |
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{ |
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long int rounded = (long int)(d + 0.5); |
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if (d - floor(d) == 0.5) { |
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if (rounded % 2 != 0) |
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rounded += (d > 0) ? -1 : 1; |
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} |
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return rounded; |
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} |
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static inline long int |
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lrintf(float f) |
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{ |
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long int rounded = (long int)(f + 0.5f); |
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if (f - floorf(f) == 0.5f) { |
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if (rounded % 2 != 0) |
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rounded += (f > 0) ? -1 : 1; |
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} |
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return rounded; |
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} |
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static inline long long int |
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llrint(double d) |
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{ |
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long long int rounded = (long long int)(d + 0.5); |
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if (d - floor(d) == 0.5) { |
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if (rounded % 2 != 0) |
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rounded += (d > 0) ? -1 : 1; |
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} |
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return rounded; |
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} |
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static inline long long int |
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llrintf(float f) |
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{ |
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long long int rounded = (long long int)(f + 0.5f); |
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if (f - floorf(f) == 0.5f) { |
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if (rounded % 2 != 0) |
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rounded += (f > 0) ? -1 : 1; |
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} |
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return rounded; |
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} |
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static inline float |
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exp2f(float f) |
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{ |
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return powf(2.0f, f); |
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} |
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static inline double |
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exp2(double d) |
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{ |
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return pow(2.0, d); |
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} |
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#endif /* C99 */ |
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/*
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* signbit() is a macro on Linux. Not available on Windows. |
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*/ |
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#ifndef signbit |
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#define signbit(x) ((x) < 0.0f) |
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#endif |
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#ifndef M_PI |
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#define M_PI (3.14159265358979323846) |
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#endif |
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#ifndef M_E |
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#define M_E (2.7182818284590452354) |
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#endif |
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#ifndef M_LOG2E |
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#define M_LOG2E (1.4426950408889634074) |
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#endif |
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#ifndef FLT_MAX_EXP |
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#define FLT_MAX_EXP 128 |
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#endif |
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#if defined(fpclassify) |
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/* ISO C99 says that fpclassify is a macro. Assume that any implementation
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* of fpclassify, whether it's in a C99 compiler or not, will be a macro. |
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*/ |
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#elif defined(__cplusplus) |
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/* For C++, fpclassify() should be defined in <cmath> */ |
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#elif defined(_MSC_VER) |
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/* Not required on VS2013 and above. Oddly, the fpclassify() function
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* doesn't exist in such a form on MSVC. This is an implementation using |
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* slightly different lower-level Windows functions. |
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*/ |
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#include <float.h> |
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static inline enum {FP_NAN, FP_INFINITE, FP_ZERO, FP_SUBNORMAL, FP_NORMAL} |
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fpclassify(double x) |
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{ |
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switch(_fpclass(x)) { |
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case _FPCLASS_SNAN: /* signaling NaN */ |
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case _FPCLASS_QNAN: /* quiet NaN */ |
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return FP_NAN; |
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case _FPCLASS_NINF: /* negative infinity */ |
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case _FPCLASS_PINF: /* positive infinity */ |
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return FP_INFINITE; |
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case _FPCLASS_NN: /* negative normal */ |
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case _FPCLASS_PN: /* positive normal */ |
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return FP_NORMAL; |
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case _FPCLASS_ND: /* negative denormalized */ |
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case _FPCLASS_PD: /* positive denormalized */ |
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return FP_SUBNORMAL; |
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case _FPCLASS_NZ: /* negative zero */ |
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case _FPCLASS_PZ: /* positive zero */ |
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return FP_ZERO; |
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default: |
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/* Should never get here; but if we do, this will guarantee
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* that the pattern is not treated like a number. |
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*/ |
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return FP_NAN; |
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} |
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} |
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#else |
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#error "Need to include or define an fpclassify function" |
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#endif |
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/* Since C++11, the following functions are part of the std namespace. Their C
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* counteparts should still exist in the global namespace, however cmath |
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* undefines those functions, which in glibc 2.23, are defined as macros rather |
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* than functions as in glibc 2.22. |
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*/ |
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#if __cplusplus >= 201103L && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 23)) |
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#include <cmath> |
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using std::fpclassify; |
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using std::isfinite; |
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using std::isinf; |
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using std::isnan; |
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using std::isnormal; |
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using std::signbit; |
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using std::isgreater; |
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using std::isgreaterequal; |
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using std::isless; |
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using std::islessequal; |
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using std::islessgreater; |
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using std::isunordered; |
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#endif |
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#endif /* #define _C99_MATH_H_ */ |
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