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* include/_mingw.h: Increment version to 2.0.

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* Makefile.in: Ditto.
	Merge in mingwex branch.
This commit is contained in:
Danny Smith
2002-06-13 10:20:48 +00:00
parent 5f74ae83e5
commit dc8971488e
120 changed files with 6607 additions and 1182 deletions
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96
winsup/mingw/include/float.h
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@ -6,11 +6,10 @@
* Also included here are some non-ANSI bits for accessing the floating
* point controller.
*
* NOTE: GCC provides float.h, and it is probably more accurate than this,
* but it doesn't include the non-standard stuff for accessing the
* fp controller. (TODO: Move those bits elsewhere?) Thus it is
* probably not a good idea to use the GCC supplied version instead
* of this header.
* NOTE: GCC provides float.h, but it doesn't include the non-standard
* stuff for accessing the fp controller. We include_next the
* GCC-supplied header and just define the MS-specific extensions
* here.
*
* This file is part of the Mingw32 package.
*
@ -33,79 +32,13 @@
*
*/
#ifndef _FLOAT_H_
#define _FLOAT_H_
#ifndef _MINGW_FLOAT_H_
#define _MINGW_FLOAT_H_
/* All the headers include this file. */
#include <_mingw.h>
#define FLT_ROUNDS 1
#define FLT_GUARD 1
#define FLT_NORMALIZE 1
/*
* The characteristics of float.
*/
/* The radix for floating point representation. */
#define FLT_RADIX 2
/* Decimal digits of precision. */
#define FLT_DIG 6
/* Smallest number such that 1+x != 1 */
#define FLT_EPSILON 1.19209290e-07F
/* The number of base FLT_RADIX digits in the mantissa. */
#define FLT_MANT_DIG 24
/* The maximum floating point number. */
#define FLT_MAX 3.40282347e+38F
/* Maximum n such that FLT_RADIX^n - 1 is representable. */
#define FLT_MAX_EXP 128
/* Maximum n such that 10^n is representable. */
#define FLT_MAX_10_EXP 38
/* Minimum normalized floating-point number. */
#define FLT_MIN 1.17549435e-38F
/* Minimum n such that FLT_RADIX^n is a normalized number. */
#define FLT_MIN_EXP (-125)
/* Minimum n such that 10^n is a normalized number. */
#define FLT_MIN_10_EXP (-37)
/*
* The characteristics of double.
*/
#define DBL_DIG 15
#define DBL_EPSILON 1.1102230246251568e-16
#define DBL_MANT_DIG 53
#define DBL_MAX 1.7976931348623157e+308
#define DBL_MAX_EXP 1024
#define DBL_MAX_10_EXP 308
#define DBL_MIN 2.2250738585072014e-308
#define DBL_MIN_EXP (-1021)
#define DBL_MIN_10_EXP (-307)
/*
* The characteristics of long double.
* NOTE: long double is the same as double.
*/
#define LDBL_DIG 15
#define LDBL_EPSILON 1.1102230246251568e-16L
#define LDBL_MANT_DIG 53
#define LDBL_MAX 1.7976931348623157e+308L
#define LDBL_MAX_EXP 1024
#define LDBL_MAX_10_EXP 308
#define LDBL_MIN 2.2250738585072014e-308L
#define LDBL_MIN_EXP (-1021)
#define LDBL_MIN_10_EXP (-307)
#include_next<float.h>
/*
* Functions and definitions for controlling the FPU.
@ -191,7 +124,17 @@ unsigned int _statusfp (void); /* Report the FPU status word */
#define _clear87 _clearfp
#define _status87 _statusfp
void _fpreset (void); /* Reset the FPU */
/*
MSVCRT.dll _fpreset initializes the control register to 0x27f,
the status register to zero and the tag word to 0FFFFh.
This differs from asm instruction finit/fninit which set control
word to 0x37f (64 bit mantissa precison rather than 53 bit).
By default, the mingw version of _fpreset sets fp control as
per fninit. To use the MSVCRT.dll _fpreset, include CRT_fp8.o when
building your application.
*/
void _fpreset (void);
void fpreset (void);
/* Global 'variable' for the current floating point error code. */
@ -199,7 +142,8 @@ int * __fpecode(void);
#define _fpecode (*(__fpecode()))
/*
* IEEE recommended functions
* IEEE recommended functions. MS puts them in float.h
* but they really belong in math.h.
*/
double _chgsign (double);