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125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/*===---- float.h - Characteristics of floating point types ----------------===
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*
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*===-----------------------------------------------------------------------===
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*/
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#ifndef __FLOAT_H
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#define __FLOAT_H
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/* If we're on MinGW, fall back to the system's float.h, which might have
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* additional definitions provided for Windows.
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* For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx
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*/
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#if (defined(__MINGW32__) || defined(_MSC_VER)) && __STDC_HOSTED__ && \
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__has_include_next(<float.h>)
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# include_next <float.h>
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/* Undefine anything that we'll be redefining below. */
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# undef FLT_EVAL_METHOD
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# undef FLT_ROUNDS
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# undef FLT_RADIX
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# undef FLT_MANT_DIG
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# undef DBL_MANT_DIG
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# undef LDBL_MANT_DIG
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# undef DECIMAL_DIG
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# undef FLT_DIG
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# undef DBL_DIG
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# undef LDBL_DIG
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# undef FLT_MIN_EXP
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# undef DBL_MIN_EXP
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# undef LDBL_MIN_EXP
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# undef FLT_MIN_10_EXP
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# undef DBL_MIN_10_EXP
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# undef LDBL_MIN_10_EXP
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# undef FLT_MAX_EXP
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# undef DBL_MAX_EXP
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# undef LDBL_MAX_EXP
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# undef FLT_MAX_10_EXP
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# undef DBL_MAX_10_EXP
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# undef LDBL_MAX_10_EXP
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# undef FLT_MAX
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# undef DBL_MAX
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# undef LDBL_MAX
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# undef FLT_EPSILON
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# undef DBL_EPSILON
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# undef LDBL_EPSILON
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# undef FLT_MIN
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# undef DBL_MIN
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# undef LDBL_MIN
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# if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
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# undef FLT_TRUE_MIN
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# undef DBL_TRUE_MIN
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# undef LDBL_TRUE_MIN
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# endif
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#endif
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/* Characteristics of floating point types, C99 5.2.4.2.2 */
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
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#define FLT_ROUNDS (__builtin_flt_rounds())
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#define FLT_RADIX __FLT_RADIX__
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#define FLT_MANT_DIG __FLT_MANT_DIG__
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#define DBL_MANT_DIG __DBL_MANT_DIG__
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#define LDBL_MANT_DIG __LDBL_MANT_DIG__
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#define DECIMAL_DIG __DECIMAL_DIG__
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#define FLT_DIG __FLT_DIG__
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#define DBL_DIG __DBL_DIG__
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#define LDBL_DIG __LDBL_DIG__
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#define FLT_MIN_EXP __FLT_MIN_EXP__
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#define DBL_MIN_EXP __DBL_MIN_EXP__
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#define LDBL_MIN_EXP __LDBL_MIN_EXP__
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#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__
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#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__
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#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
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#define FLT_MAX_EXP __FLT_MAX_EXP__
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#define DBL_MAX_EXP __DBL_MAX_EXP__
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#define LDBL_MAX_EXP __LDBL_MAX_EXP__
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#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__
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#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__
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#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
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#define FLT_MAX __FLT_MAX__
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#define DBL_MAX __DBL_MAX__
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#define LDBL_MAX __LDBL_MAX__
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#define FLT_EPSILON __FLT_EPSILON__
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#define DBL_EPSILON __DBL_EPSILON__
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#define LDBL_EPSILON __LDBL_EPSILON__
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#define FLT_MIN __FLT_MIN__
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#define DBL_MIN __DBL_MIN__
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#define LDBL_MIN __LDBL_MIN__
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#if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
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# define FLT_TRUE_MIN __FLT_DENORM_MIN__
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# define DBL_TRUE_MIN __DBL_DENORM_MIN__
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# define LDBL_TRUE_MIN __LDBL_DENORM_MIN__
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#endif
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#endif /* __FLOAT_H */
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