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- /*===---- float.h - Characteristics of floating point types ----------------===
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- *
- *===-----------------------------------------------------------------------===
- */
- #ifndef __FLOAT_H
- #define __FLOAT_H
- /* If we're on MinGW, fall back to the system's float.h, which might have
- * additional definitions provided for Windows.
- * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx
- *
- * Also fall back on Darwin to allow additional definitions and
- * implementation-defined values.
- */
- #if (defined(__APPLE__) || (defined(__MINGW32__) || defined(_MSC_VER))) && \
- __STDC_HOSTED__ && __has_include_next(<float.h>)
- /* Prior to Apple's 10.7 SDK, float.h SDK header used to apply an extra level
- * of #include_next<float.h> to keep Metrowerks compilers happy. Avoid this
- * extra indirection.
- */
- #ifdef __APPLE__
- #define _FLOAT_H_
- #endif
- # include_next <float.h>
- /* Undefine anything that we'll be redefining below. */
- # undef FLT_EVAL_METHOD
- # undef FLT_ROUNDS
- # undef FLT_RADIX
- # undef FLT_MANT_DIG
- # undef DBL_MANT_DIG
- # undef LDBL_MANT_DIG
- # if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__)
- # undef DECIMAL_DIG
- # endif
- # undef FLT_DIG
- # undef DBL_DIG
- # undef LDBL_DIG
- # undef FLT_MIN_EXP
- # undef DBL_MIN_EXP
- # undef LDBL_MIN_EXP
- # undef FLT_MIN_10_EXP
- # undef DBL_MIN_10_EXP
- # undef LDBL_MIN_10_EXP
- # undef FLT_MAX_EXP
- # undef DBL_MAX_EXP
- # undef LDBL_MAX_EXP
- # undef FLT_MAX_10_EXP
- # undef DBL_MAX_10_EXP
- # undef LDBL_MAX_10_EXP
- # undef FLT_MAX
- # undef DBL_MAX
- # undef LDBL_MAX
- # undef FLT_EPSILON
- # undef DBL_EPSILON
- # undef LDBL_EPSILON
- # undef FLT_MIN
- # undef DBL_MIN
- # undef LDBL_MIN
- # if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
- # undef FLT_TRUE_MIN
- # undef DBL_TRUE_MIN
- # undef LDBL_TRUE_MIN
- # undef FLT_DECIMAL_DIG
- # undef DBL_DECIMAL_DIG
- # undef LDBL_DECIMAL_DIG
- # endif
- #endif
- /* Characteristics of floating point types, C99 5.2.4.2.2 */
- #define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
- #define FLT_ROUNDS (__builtin_flt_rounds())
- #define FLT_RADIX __FLT_RADIX__
- #define FLT_MANT_DIG __FLT_MANT_DIG__
- #define DBL_MANT_DIG __DBL_MANT_DIG__
- #define LDBL_MANT_DIG __LDBL_MANT_DIG__
- #if __STDC_VERSION__ >= 199901L || !defined(__STRICT_ANSI__)
- # define DECIMAL_DIG __DECIMAL_DIG__
- #endif
- #define FLT_DIG __FLT_DIG__
- #define DBL_DIG __DBL_DIG__
- #define LDBL_DIG __LDBL_DIG__
- #define FLT_MIN_EXP __FLT_MIN_EXP__
- #define DBL_MIN_EXP __DBL_MIN_EXP__
- #define LDBL_MIN_EXP __LDBL_MIN_EXP__
- #define FLT_MIN_10_EXP __FLT_MIN_10_EXP__
- #define DBL_MIN_10_EXP __DBL_MIN_10_EXP__
- #define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
- #define FLT_MAX_EXP __FLT_MAX_EXP__
- #define DBL_MAX_EXP __DBL_MAX_EXP__
- #define LDBL_MAX_EXP __LDBL_MAX_EXP__
- #define FLT_MAX_10_EXP __FLT_MAX_10_EXP__
- #define DBL_MAX_10_EXP __DBL_MAX_10_EXP__
- #define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
- #define FLT_MAX __FLT_MAX__
- #define DBL_MAX __DBL_MAX__
- #define LDBL_MAX __LDBL_MAX__
- #define FLT_EPSILON __FLT_EPSILON__
- #define DBL_EPSILON __DBL_EPSILON__
- #define LDBL_EPSILON __LDBL_EPSILON__
- #define FLT_MIN __FLT_MIN__
- #define DBL_MIN __DBL_MIN__
- #define LDBL_MIN __LDBL_MIN__
- #if __STDC_VERSION__ >= 201112L || !defined(__STRICT_ANSI__)
- # define FLT_TRUE_MIN __FLT_DENORM_MIN__
- # define DBL_TRUE_MIN __DBL_DENORM_MIN__
- # define LDBL_TRUE_MIN __LDBL_DENORM_MIN__
- # define FLT_DECIMAL_DIG __FLT_DECIMAL_DIG__
- # define DBL_DECIMAL_DIG __DBL_DECIMAL_DIG__
- # define LDBL_DECIMAL_DIG __LDBL_DECIMAL_DIG__
- #endif
- #ifdef __STDC_WANT_IEC_60559_TYPES_EXT__
- # define FLT16_MANT_DIG __FLT16_MANT_DIG__
- # define FLT16_DECIMAL_DIG __FLT16_DECIMAL_DIG__
- # define FLT16_DIG __FLT16_DIG__
- # define FLT16_MIN_EXP __FLT16_MIN_EXP__
- # define FLT16_MIN_10_EXP __FLT16_MIN_10_EXP__
- # define FLT16_MAX_EXP __FLT16_MAX_EXP__
- # define FLT16_MAX_10_EXP __FLT16_MAX_10_EXP__
- # define FLT16_MAX __FLT16_MAX__
- # define FLT16_EPSILON __FLT16_EPSILON__
- # define FLT16_MIN __FLT16_MIN__
- # define FLT16_TRUE_MIN __FLT16_TRUE_MIN__
- #endif /* __STDC_WANT_IEC_60559_TYPES_EXT__ */
- #endif /* __FLOAT_H */
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