mirror of
https://github.com/QB64Official/qb64.git
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310 lines
9.9 KiB
C
310 lines
9.9 KiB
C
/*
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* float.h
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* This file has no copyright assigned and is placed in the Public Domain.
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* This file is part of the mingw-runtime package.
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* No warranty is given; refer to the file DISCLAIMER.PD within the package.
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*
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* Constants related to floating point arithmetic.
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*
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* Also included here are some non-ANSI bits for accessing the floating
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* point controller.
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*
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*/
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#if defined(__LIBMSVCRT__)
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/* When building mingw-w64, this should be blank. */
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#define _SECIMP
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#else
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#ifndef _SECIMP
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#define _SECIMP __declspec(dllimport)
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#endif /* _SECIMP */
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#endif /* defined(_CRTBLD) || defined(__LIBMSVCRT__) */
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#if (defined (__GNUC__) && defined (__GNUC_MINOR__)) \
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|| (defined(__clang__) && defined(__clang_major__))
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#if (__GNUC__ < 4 || (__GNUC__ == 4 && __GNUC_MINOR__ < 6)) \
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|| (__clang_major__ >=3)
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#if !defined(_FLOAT_H___) && !defined(__FLOAT_H)
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#include_next <float.h>
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#endif
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#elif !defined (_FLOAT_H___)
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#if (__GNUC__ < 4)
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#error Corrupt install of gcc-s internal headers, or search order was changed.
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#else
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/* #include_next <float_ginclude.h> */
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/* Number of decimal digits, q, such that any floating-point number with q
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decimal digits can be rounded into a floating-point number with p radix b
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digits and back again without change to the q decimal digits,
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p * log10(b) if b is a power of 10
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floor((p - 1) * log10(b)) otherwise
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*/
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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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#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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/* Maximum representable finite floating-point number,
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(1 - b**-p) * b**emax
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*/
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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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#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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/* Minimum normalized positive floating-point number, b**(emin - 1). */
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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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#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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/* Needed for libjava building - Victor K. */
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/* Radix of exponent representation, b. */
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#undef FLT_RADIX
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#define FLT_RADIX __FLT_RADIX__
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/* Minimum int x such that FLT_RADIX**(x-1) is a normalized float, emin */
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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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#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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/* Minimum negative integer such that 10 raised to that power is in the
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range of normalized floating-point numbers,
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ceil(log10(b) * (emin - 1))
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*/
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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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#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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/* Maximum int x such that FLT_RADIX**(x-1) is a representable float, emax. */
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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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#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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/* Maximum integer such that 10 raised to that power is in the range of
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representable finite floating-point numbers,
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floor(log10((1 - b**-p) * b**emax))
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*/
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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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#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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/* Addition rounds to 0: zero, 1: nearest, 2: +inf, 3: -inf, -1: unknown. */
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/* ??? This is supposed to change with calls to fesetround in <fenv.h>. */
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#undef FLT_ROUNDS
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#define FLT_ROUNDS 1
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#define _FLOAT_H___
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#endif
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#endif
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#endif
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#ifndef _MINGW_FLOAT_H_
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#define _MINGW_FLOAT_H_
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/* All the headers include this file. */
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#include <crtdefs.h>
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/*
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* Functions and definitions for controlling the FPU.
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*/
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#ifndef __STRICT_ANSI__
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/* TODO: These constants are only valid for x86 machines */
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/* Control word masks for unMask */
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#define _MCW_DN 0x03000000 /* Denormal control */
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#define _MCW_EM 0x0008001F /* Error masks */
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#define _MCW_IC 0x00040000 /* Infinity */
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#define _MCW_RC 0x00000300 /* Rounding */
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#define _MCW_PC 0x00030000 /* Precision */
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/* Number of base-FLT_RADIX digits in the significand, p. */
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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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#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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#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
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/* The floating-point expression evaluation method.
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-1 indeterminate
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0 evaluate all operations and constants just to the range and
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precision of the type
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1 evaluate operations and constants of type float and double
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to the range and precision of the double type, evaluate
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long double operations and constants to the range and
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precision of the long double type
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2 evaluate all operations and constants to the range and
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precision of the long double type
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??? This ought to change with the setting of the fp control word;
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the value provided by the compiler assumes the widest setting. */
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#undef FLT_EVAL_METHOD
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#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
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#endif /* C99 */
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/* Control word values for unNew (use with related unMask above) */
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#define _DN_SAVE 0x00000000
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#define _DN_FLUSH 0x01000000
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#define _EM_INVALID 0x00000010
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#define _EM_DENORMAL 0x00080000
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#define _EM_ZERODIVIDE 0x00000008
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#define _EM_OVERFLOW 0x00000004
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#define _EM_UNDERFLOW 0x00000002
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#define _EM_INEXACT 0x00000001
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#define _IC_AFFINE 0x00040000
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#define _IC_PROJECTIVE 0x00000000
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#define _RC_CHOP 0x00000300
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#define _RC_UP 0x00000200
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#define _RC_DOWN 0x00000100
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#define _RC_NEAR 0x00000000
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#define _PC_24 0x00020000
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#define _PC_53 0x00010000
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#define _PC_64 0x00000000
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/* These are also defined in Mingw math.h, needed to work around
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GCC build issues. */
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/* Return values for fpclass. */
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#ifndef __MINGW_FPCLASS_DEFINED
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#define __MINGW_FPCLASS_DEFINED 1
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#define _FPCLASS_SNAN 0x0001 /* Signaling "Not a Number" */
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#define _FPCLASS_QNAN 0x0002 /* Quiet "Not a Number" */
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#define _FPCLASS_NINF 0x0004 /* Negative Infinity */
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#define _FPCLASS_NN 0x0008 /* Negative Normal */
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#define _FPCLASS_ND 0x0010 /* Negative Denormal */
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#define _FPCLASS_NZ 0x0020 /* Negative Zero */
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#define _FPCLASS_PZ 0x0040 /* Positive Zero */
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#define _FPCLASS_PD 0x0080 /* Positive Denormal */
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#define _FPCLASS_PN 0x0100 /* Positive Normal */
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#define _FPCLASS_PINF 0x0200 /* Positive Infinity */
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#endif /* __MINGW_FPCLASS_DEFINED */
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/* invalid subconditions (_SW_INVALID also set) */
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#define _SW_UNEMULATED 0x0040 /* unemulated instruction */
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#define _SW_SQRTNEG 0x0080 /* square root of a neg number */
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#define _SW_STACKOVERFLOW 0x0200 /* FP stack overflow */
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#define _SW_STACKUNDERFLOW 0x0400 /* FP stack underflow */
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/* Floating point error signals and return codes */
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#define _FPE_INVALID 0x81
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#define _FPE_DENORMAL 0x82
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#define _FPE_ZERODIVIDE 0x83
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#define _FPE_OVERFLOW 0x84
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#define _FPE_UNDERFLOW 0x85
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#define _FPE_INEXACT 0x86
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#define _FPE_UNEMULATED 0x87
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#define _FPE_SQRTNEG 0x88
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#define _FPE_STACKOVERFLOW 0x8a
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#define _FPE_STACKUNDERFLOW 0x8b
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#define _FPE_EXPLICITGEN 0x8c /* raise( SIGFPE ); */
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#define CW_DEFAULT _CW_DEFAULT
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#define MCW_PC _MCW_PC
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#define PC_24 _PC_24
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#define PC_53 _PC_53
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#define PC_64 _PC_64
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#if defined(_M_IX86)
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#define _CW_DEFAULT (_RC_NEAR+_PC_53+_EM_INVALID+_EM_ZERODIVIDE+_EM_OVERFLOW+_EM_UNDERFLOW+_EM_INEXACT+_EM_DENORMAL)
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#elif defined(_M_IA64)
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#define _CW_DEFAULT (_RC_NEAR+_PC_64+_EM_INVALID+_EM_ZERODIVIDE+_EM_OVERFLOW+_EM_UNDERFLOW+_EM_INEXACT+_EM_DENORMAL)
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#elif defined(_M_AMD64)
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#define _CW_DEFAULT (_RC_NEAR+_EM_INVALID+_EM_ZERODIVIDE+_EM_OVERFLOW+_EM_UNDERFLOW+_EM_INEXACT+_EM_DENORMAL)
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#endif
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#ifndef RC_INVOKED
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Set the FPU control word as cw = (cw & ~unMask) | (unNew & unMask),
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* i.e. change the bits in unMask to have the values they have in unNew,
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* leaving other bits unchanged. */
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_CRTIMP unsigned int __cdecl __MINGW_NOTHROW _controlfp (unsigned int unNew, unsigned int unMask) __MINGW_ATTRIB_DEPRECATED_SEC_WARN;
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_SECIMP errno_t __cdecl _controlfp_s(unsigned int *_CurrentState, unsigned int _NewValue, unsigned int _Mask);
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_CRTIMP unsigned int __cdecl __MINGW_NOTHROW _control87 (unsigned int unNew, unsigned int unMask);
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_CRTIMP unsigned int __cdecl __MINGW_NOTHROW _clearfp (void); /* Clear the FPU status word */
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_CRTIMP unsigned int __cdecl __MINGW_NOTHROW _statusfp (void); /* Report the FPU status word */
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#define _clear87 _clearfp
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#define _status87 _statusfp
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/*
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MSVCRT.dll _fpreset initializes the control register to 0x27f,
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the status register to zero and the tag word to 0FFFFh.
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This differs from asm instruction finit/fninit which set control
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word to 0x37f (64 bit mantissa precison rather than 53 bit).
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By default, the mingw version of _fpreset sets fp control as
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per fninit. To use the MSVCRT.dll _fpreset, include CRT_fp8.o when
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building your application.
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*/
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void __cdecl __MINGW_NOTHROW _fpreset (void);
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void __cdecl __MINGW_NOTHROW fpreset (void);
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/* Global 'variable' for the current floating point error code. */
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_CRTIMP int * __cdecl __MINGW_NOTHROW __fpecode(void);
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#define _fpecode (*(__fpecode()))
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/*
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* IEEE recommended functions. MS puts them in float.h
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* but they really belong in math.h.
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*/
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#ifndef _SIGN_DEFINED
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#define _SIGN_DEFINED
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_CRTIMP double __cdecl __MINGW_NOTHROW _chgsign (double _X);
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_CRTIMP double __cdecl __MINGW_NOTHROW _copysign (double _Number,double _Sign);
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_CRTIMP double __cdecl __MINGW_NOTHROW _logb (double);
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_CRTIMP double __cdecl __MINGW_NOTHROW _nextafter (double, double);
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_CRTIMP double __cdecl __MINGW_NOTHROW _scalb (double, long);
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_CRTIMP int __cdecl __MINGW_NOTHROW _finite (double);
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_CRTIMP int __cdecl __MINGW_NOTHROW _fpclass (double);
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_CRTIMP int __cdecl __MINGW_NOTHROW _isnan (double);
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#define _copysignl copysignl
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extern long double __cdecl _chgsignl (long double);
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#endif /* _SIGN_DEFINED */
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#ifdef __cplusplus
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}
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#endif
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#endif /* Not RC_INVOKED */
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#endif /* Not __STRICT_ANSI__ */
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#endif /* _MINGW_FLOAT_H_ */
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