246 lines
4.1 KiB
C
246 lines
4.1 KiB
C
/***
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* fpieee.h - Definitions for floating point IEEE exception handling
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*
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* Copyright (c) 1991-1993, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* This file contains constant and type definitions for handling
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* floating point exceptions [ANSI/IEEE std. 754]
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*
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*******************************************************************************/
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#ifndef _INC_FPIEEE
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _LANGUAGE_ASSEMBLY
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/*
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* Conditional macro definition for function calling type and variable type
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* qualifiers.
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*/
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#if ( (_MSC_VER >= 800) && (_M_IX86 >= 300) )
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/*
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* Definitions for MS C8-32 (386/486) compiler
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*/
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#define _CRTAPI1 __cdecl
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#define _CRTAPI2 __cdecl
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#else
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/*
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* Other compilers (e.g., MIPS)
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*/
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#define _CRTAPI1
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#define _CRTAPI2
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#endif
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/*
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* Define floating point IEEE compare result values.
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*/
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typedef enum {
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_FpCompareEqual,
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_FpCompareGreater,
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_FpCompareLess,
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_FpCompareUnordered
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} _FPIEEE_COMPARE_RESULT;
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/*
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* Define floating point format and result precision values.
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*/
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typedef enum {
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_FpFormatFp32,
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_FpFormatFp64,
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_FpFormatFp80,
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_FpFormatFp128,
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_FpFormatI16,
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_FpFormatI32,
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_FpFormatI64,
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_FpFormatU16,
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_FpFormatU32,
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_FpFormatU64,
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_FpFormatBcd80,
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_FpFormatCompare,
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_FpFormatString
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} _FPIEEE_FORMAT;
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/*
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* Define operation code values.
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*
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* NOTE: If you change this enum, change the #defines below for assembler!
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*/
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typedef enum {
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_FpCodeUnspecified,
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_FpCodeAdd,
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_FpCodeSubtract,
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_FpCodeMultiply,
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_FpCodeDivide,
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_FpCodeSquareRoot,
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_FpCodeRemainder,
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_FpCodeCompare,
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_FpCodeConvert,
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_FpCodeRound,
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_FpCodeTruncate,
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_FpCodeFloor,
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_FpCodeCeil,
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_FpCodeAcos,
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_FpCodeAsin,
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_FpCodeAtan,
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_FpCodeAtan2,
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_FpCodeCabs,
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_FpCodeCos,
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_FpCodeCosh,
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_FpCodeExp,
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_FpCodeFabs,
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_FpCodeFmod,
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_FpCodeFrexp,
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_FpCodeHypot,
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_FpCodeLdexp,
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_FpCodeLog,
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_FpCodeLog10,
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_FpCodeModf,
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_FpCodePow,
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_FpCodeSin,
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_FpCodeSinh,
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_FpCodeTan,
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_FpCodeTanh,
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_FpCodeY0,
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_FpCodeY1,
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_FpCodeYn,
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_FpCodeLogb,
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_FpCodeNextafter,
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_FpCodeNegate
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} _FP_OPERATION_CODE;
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#endif /* _LANGUAGE_ASSEMBLY */
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/*
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* Define rounding modes.
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*/
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#ifndef _LANGUAGE_ASSEMBLY
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typedef enum {
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_FpRoundNearest,
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_FpRoundMinusInfinity,
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_FpRoundPlusInfinity,
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_FpRoundChopped
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} _FPIEEE_ROUNDING_MODE;
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typedef enum {
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_FpPrecisionFull,
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_FpPrecision53,
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_FpPrecision24
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} _FPIEEE_PRECISION;
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/*
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* Define floating point context record
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*/
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typedef float _FP32;
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typedef double _FP64;
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typedef short _I16;
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typedef int _I32;
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typedef unsigned short _U16;
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typedef unsigned int _U32;
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typedef struct {
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unsigned short W[5];
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} _FP80;
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typedef struct {
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unsigned long W[4];
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} _FP128;
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typedef struct {
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unsigned long W[2];
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} _I64;
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typedef struct {
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unsigned long W[2];
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} _U64;
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typedef struct {
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unsigned short W[5];
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} _BCD80;
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typedef struct {
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union {
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_FP32 Fp32Value;
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_FP64 Fp64Value;
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_FP80 Fp80Value;
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_FP128 Fp128Value;
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_I16 I16Value;
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_I32 I32Value;
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_I64 I64Value;
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_U16 U16Value;
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_U32 U32Value;
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_U64 U64Value;
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_BCD80 Bcd80Value;
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char *StringValue;
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int CompareValue;
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} Value;
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unsigned int OperandValid : 1;
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unsigned int Format : 4;
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} _FPIEEE_VALUE;
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typedef struct {
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unsigned int Inexact : 1;
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unsigned int Underflow : 1;
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unsigned int Overflow : 1;
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unsigned int ZeroDivide : 1;
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unsigned int InvalidOperation : 1;
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} _FPIEEE_EXCEPTION_FLAGS;
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typedef struct {
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unsigned int RoundingMode : 2;
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unsigned int Precision : 3;
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unsigned int Operation :12;
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_FPIEEE_EXCEPTION_FLAGS Cause;
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_FPIEEE_EXCEPTION_FLAGS Enable;
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_FPIEEE_EXCEPTION_FLAGS Status;
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_FPIEEE_VALUE Operand1;
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_FPIEEE_VALUE Operand2;
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_FPIEEE_VALUE Result;
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} _FPIEEE_RECORD;
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struct _EXCEPTION_POINTERS;
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/*
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* Floating point IEEE exception filter routine
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*/
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int _CRTAPI1 _fpieee_flt(unsigned long code,
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struct _EXCEPTION_POINTERS *p,
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int handler(_FPIEEE_RECORD *));
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#endif /* _LANGUAGE_ASSEMBLY */
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#ifdef __cplusplus
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}
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#endif
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#define _INC_FPIEEE
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#endif /* _INC_FPIEEE */
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