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Diffstat (limited to 'clang/lib/Headers/float.h')
| -rw-r--r-- | clang/lib/Headers/float.h | 152 |
1 files changed, 152 insertions, 0 deletions
diff --git a/clang/lib/Headers/float.h b/clang/lib/Headers/float.h new file mode 100644 index 0000000000000..ed610b24aa103 --- /dev/null +++ b/clang/lib/Headers/float.h @@ -0,0 +1,152 @@ +/*===---- float.h - Characteristics of floating point types ----------------=== + * + * Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. + * See https://llvm.org/LICENSE.txt for license information. + * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception + * + *===-----------------------------------------------------------------------=== + */ + +#ifndef __CLANG_FLOAT_H +#define __CLANG_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__) || __cplusplus >= 201103L +# 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__) || __cplusplus >= 201703L +# undef FLT_TRUE_MIN +# undef DBL_TRUE_MIN +# undef LDBL_TRUE_MIN +# undef FLT_DECIMAL_DIG +# undef DBL_DECIMAL_DIG +# undef LDBL_DECIMAL_DIG +# undef FLT_HAS_SUBNORM +# undef DBL_HAS_SUBNORM +# undef LDBL_HAS_SUBNORM +# 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__) || __cplusplus >= 201103L +# 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__) || __cplusplus >= 201703L +# 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__ +# define FLT_HAS_SUBNORM __FLT_HAS_DENORM__ +# define DBL_HAS_SUBNORM __DBL_HAS_DENORM__ +# define LDBL_HAS_SUBNORM __LDBL_HAS_DENORM__ +#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 /* __CLANG_FLOAT_H */ |