musl/include/float.h

#ifndef _FLOAT_H
#define _FLOAT_H

#ifdef __cplusplus
extern "C" {
#endif

int __flt_rounds(void);
#define FLT_ROUNDS (__flt_rounds())

#define FLT_RADIX 2

#define FLT_TRUE_MIN 1.40129846432481707092e-45F
#define FLT_MIN 1.17549435082228750797e-38F
#define FLT_MAX 3.40282346638528859812e+38F
#define FLT_EPSILON 1.1920928955078125e-07F

#define FLT_MANT_DIG 24
#define FLT_MIN_EXP (-125)
#define FLT_MAX_EXP 128
#define FLT_HAS_SUBNORM 1

#define FLT_DIG 6
#define FLT_DECIMAL_DIG 9
#define FLT_MIN_10_EXP (-37)
#define FLT_MAX_10_EXP 38

#define DBL_TRUE_MIN 4.94065645841246544177e-324
#define DBL_MIN 2.22507385850720138309e-308
#define DBL_MAX 1.79769313486231570815e+308
#define DBL_EPSILON 2.22044604925031308085e-16

#define DBL_MANT_DIG 53
#define DBL_MIN_EXP (-1021)
#define DBL_MAX_EXP 1024
#define DBL_HAS_SUBNORM 1

#define DBL_DIG 15
#define DBL_DECIMAL_DIG 17
#define DBL_MIN_10_EXP (-307)
#define DBL_MAX_10_EXP 308

#define LDBL_HAS_SUBNORM 1
#define LDBL_DECIMAL_DIG DECIMAL_DIG

#include <bits/float.h>

#ifdef __cplusplus
}
#endif

#endif
initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00			`#ifndef _FLOAT_H`
			`#define _FLOAT_H`

fix FLT_ROUNDS regression in C++ applications commit 559de8f5f06da9022cbba70e22e14a710eb74513 redefined FLT_ROUNDS to use an external function that can report the actual current rounding mode, rather than always reporting round-to-nearest. however, float.h did not include 'extern "C"' wrapping for C++, so C++ programs using FLT_ROUNDS ended up with an unresolved reference to a name-mangled C++ function __flt_rounds. 2015-03-23 15:26:51 +00:00			`#ifdef __cplusplus`
			`extern "C" {`
			`#endif`

fix FLT_ROUNDS to reflect the current rounding mode Implemented as a wrapper around fegetround introducing a new function to the ABI: __flt_rounds. (fegetround cannot be used directly from float.h) 2015-03-07 10:00:37 +00:00			`int __flt_rounds(void);`
			`#define FLT_ROUNDS (__flt_rounds())`

initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00			`#define FLT_RADIX 2`

write floating point limit constants to 21 significant decimal places this is enough to produce the correct value even if the constant is interpreted as 80-bit extended precision, which matters on archs with excess precision (FLT_EVAL_METHOD==2) under at least some interpretations of the C standard. the shorter representations, while correct if converted to the nominal precision at translation time, could produce an incorrect value at extended precision, yielding results such as (double)DBL_MAX != DBL_MAX. 2013-11-20 22:40:33 +00:00			`#define FLT_TRUE_MIN 1.40129846432481707092e-45F`
			`#define FLT_MIN 1.17549435082228750797e-38F`
			`#define FLT_MAX 3.40282346638528859812e+38F`
			`#define FLT_EPSILON 1.1920928955078125e-07F`
initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00
			`#define FLT_MANT_DIG 24`
			`#define FLT_MIN_EXP (-125)`
			`#define FLT_MAX_EXP 128`
add C11 floating-point characteristic macros to float.h C11 introduced _DECIMAL_DIG and _HAS_SUBNORM macros. 2014-08-27 06:47:19 +00:00			`#define FLT_HAS_SUBNORM 1`
initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00
			`#define FLT_DIG 6`
add C11 floating-point characteristic macros to float.h C11 introduced _DECIMAL_DIG and _HAS_SUBNORM macros. 2014-08-27 06:47:19 +00:00			`#define FLT_DECIMAL_DIG 9`
initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00			`#define FLT_MIN_10_EXP (-37)`
			`#define FLT_MAX_10_EXP 38`

write floating point limit constants to 21 significant decimal places this is enough to produce the correct value even if the constant is interpreted as 80-bit extended precision, which matters on archs with excess precision (FLT_EVAL_METHOD==2) under at least some interpretations of the C standard. the shorter representations, while correct if converted to the nominal precision at translation time, could produce an incorrect value at extended precision, yielding results such as (double)DBL_MAX != DBL_MAX. 2013-11-20 22:40:33 +00:00			`#define DBL_TRUE_MIN 4.94065645841246544177e-324`
			`#define DBL_MIN 2.22507385850720138309e-308`
			`#define DBL_MAX 1.79769313486231570815e+308`
			`#define DBL_EPSILON 2.22044604925031308085e-16`
initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00
			`#define DBL_MANT_DIG 53`
			`#define DBL_MIN_EXP (-1021)`
			`#define DBL_MAX_EXP 1024`
add C11 floating-point characteristic macros to float.h C11 introduced _DECIMAL_DIG and _HAS_SUBNORM macros. 2014-08-27 06:47:19 +00:00			`#define DBL_HAS_SUBNORM 1`
initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00
			`#define DBL_DIG 15`
add C11 floating-point characteristic macros to float.h C11 introduced _DECIMAL_DIG and _HAS_SUBNORM macros. 2014-08-27 06:47:19 +00:00			`#define DBL_DECIMAL_DIG 17`
initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00			`#define DBL_MIN_10_EXP (-307)`
			`#define DBL_MAX_10_EXP 308`

add C11 floating-point characteristic macros to float.h C11 introduced _DECIMAL_DIG and _HAS_SUBNORM macros. 2014-08-27 06:47:19 +00:00			`#define LDBL_HAS_SUBNORM 1`
			`#define LDBL_DECIMAL_DIG DECIMAL_DIG`

initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00			`#include <bits/float.h>`

fix FLT_ROUNDS regression in C++ applications commit 559de8f5f06da9022cbba70e22e14a710eb74513 redefined FLT_ROUNDS to use an external function that can report the actual current rounding mode, rather than always reporting round-to-nearest. however, float.h did not include 'extern "C"' wrapping for C++, so C++ programs using FLT_ROUNDS ended up with an unresolved reference to a name-mangled C++ function __flt_rounds. 2015-03-23 15:26:51 +00:00			`#ifdef __cplusplus`
			`}`
			`#endif`

initial check-in, version 0.5.0 2011-02-12 05:22:29 +00:00			`#endif`