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223 lines
6.6 KiB
223 lines
6.6 KiB
/***
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*fltintrn.h - contains declarations of internal floating point types,
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* routines and variables
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*
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* Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved.
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*
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*Purpose:
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* Declares floating point types, routines and variables used
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* internally by the C run-time.
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*
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* [Internal]
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*
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*Revision History:
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* 10-20-88 JCR Changed 'DOUBLE' to 'double' for 386
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* 08-15-89 GJF Fixed copyright, indents
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* 10-30-89 GJF Fixed copyright (again)
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* 03-02-90 GJF Added #ifndef _INC_STRUCT stuff. Also, cleaned up
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* the formatting a bit.
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* 03-05-90 GJF Fixed up the arg types in protoypes. Also, added
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* #include <cruntime.h>
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* 03-22-90 GJF Made _fltin(), _fltin2(), _fltout() and _fltout2()
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* _CALLTYPE2 (for now) and added a prototype for
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* _fptostr().
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* 08-01-90 SBM Moved _cftoe() and _cftof() here from internal.h
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* and _cfltcvt_tab from input.c and output.c,
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* added typedefs for _cfltcvt_tab entries,
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* renamed module from <struct.h> to <fltintrn.h> and
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* adjusted #ifndef stuff to #ifndef _INC_FLTINTRN
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* 08-29-90 SBM Changed type of _cfltcvt_tab[] to agree with
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* definition in cmiscdat.c
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* 04-26-91 SRW Removed level 3 warnings
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* 08-26-91 JCR Changed MIPS to _MIPS_, ANSI naming
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* 08-06-92 GJF Function calling type and variable type macros. Revised
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* use of target processor macros.
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* 11-09-92 GJF Fixed preprocessing conditionals for MIPS.
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* 01-09-93 SRW Remove usage of MIPS and ALPHA to conform to ANSI
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* Use _MIPS_ and _ALPHA_ instead.
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* 01-21-93 GJF Removed support for C6-386's _cdecl.
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* 04-06-93 SKS Replace _CRTAPI1/2 with __cdecl, _CRTVAR1 with nothing
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* 09-01-93 GJF Merged Cuda and NT SDK versions.
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* 10-13-93 GJF Dropped _MIPS_. Replaced _ALPHA_ with _M_ALPHA.
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* 10-29-93 GJF Disabled the ever-annoying 4069 warning.
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* 10-02-94 BWT Add PPC support.
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* 12-15-94 XY merged with mac header
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* 02-14-95 CFW Clean up Mac merge.
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* 03-29-95 CFW Add error message to internal headers.
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* 12-14-95 JWM Add "#pragma once".
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* 02-05-97 GJF Deleted obsolete support for _CRTAPI* and _NTSDK.
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* Replaced (defined(_M_MPPC) || defined(_M_M68K)) with
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* defined(_MAC) where appropriate. Replaced _CALLTYPE2
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* with __cdecl. Also, detab-ed.
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* 05-17-99 PML Remove all Macintosh support.
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* 09-05-00 GB Changed the definition of fltout functions. Use DOUBLE
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* instead of double
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* 07-15-01 PML Remove all ALPHA, MIPS, and PPC code
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*
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****/
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#if _MSC_VER > 1000 /*IFSTRIP=IGN*/
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#pragma once
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#endif
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#ifndef _INC_FLTINTRN
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#define _INC_FLTINTRN
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#ifndef _CRTBLD
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/*
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* This is an internal C runtime header file. It is used when building
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* the C runtimes only. It is not to be used as a public header file.
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*/
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#error ERROR: Use of C runtime library internal header file.
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#endif /* _CRTBLD */
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <cruntime.h>
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/* Define _CRTIMP */
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#ifndef _CRTIMP
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#ifdef CRTDLL
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#define _CRTIMP __declspec(dllexport)
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#else /* ndef CRTDLL */
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#ifdef _DLL
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#define _CRTIMP __declspec(dllimport)
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#else /* ndef _DLL */
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#define _CRTIMP
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#endif /* _DLL */
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#endif /* CRTDLL */
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#endif /* _CRTIMP */
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/* Define __cdecl for non-Microsoft compilers */
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#if ( !defined(_MSC_VER) && !defined(__cdecl) )
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#define __cdecl
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#endif
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/*
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* For MS C for the x86 family, disable the annoying "long double is the
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* same precision as double" warning
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*/
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#ifdef _M_IX86
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#pragma warning(disable:4069)
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#endif
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/*
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* structs used to fool the compiler into not generating floating point
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* instructions when copying and pushing [long] double values
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*/
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#ifndef DOUBLE
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typedef struct {
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double x;
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} DOUBLE;
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#endif
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#ifndef LONGDOUBLE
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typedef struct {
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/*
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* Assume there is a long double type
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*/
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long double x;
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} LONGDOUBLE;
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#endif
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/*
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* typedef for _fltout
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*/
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typedef struct _strflt
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{
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int sign; /* zero if positive otherwise negative */
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int decpt; /* exponent of floating point number */
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int flag; /* zero if okay otherwise IEEE overflow */
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char *mantissa; /* pointer to mantissa in string form */
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}
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*STRFLT;
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/*
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* typedef for _fltin
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*/
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typedef struct _flt
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{
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int flags;
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int nbytes; /* number of characters read */
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long lval;
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double dval; /* the returned floating point number */
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}
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*FLT;
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/* floating point conversion routines, keep in sync with mrt32\include\convert.h */
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char *_cftoe(double *, char *, int, int);
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char *_cftof(double *, char *, int);
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void __cdecl _fptostr(char *, int, STRFLT);
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#ifdef _MT
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STRFLT __cdecl _fltout2( DOUBLE, STRFLT, char * );
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FLT __cdecl _fltin2( FLT , const char *, int, int, int );
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#else
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STRFLT __cdecl _fltout( DOUBLE );
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FLT __cdecl _fltin( const char *, int, int, int );
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#endif
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/*
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* table of pointers to floating point helper routines
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*
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* We can't specify the prototypes for the entries of the table accurately,
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* since different functions in the table have different arglists.
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* So we declare the functions to take and return void (which is the
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* correct prototype for _fptrap(), which is what the entries are all
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* initialized to if no floating point is loaded) and cast appropriately
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* on every usage.
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*/
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typedef void (* PFV)(void);
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extern PFV _cfltcvt_tab[6];
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typedef void (* PF0)(DOUBLE*, char*, int, int, int);
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#define _cfltcvt(a,b,c,d,e) (*((PF0)_cfltcvt_tab[0]))(a,b,c,d,e)
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typedef void (* PF1)(char*);
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#define _cropzeros(a) (*((PF1)_cfltcvt_tab[1]))(a)
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typedef void (* PF2)(int, char*, char*);
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#define _fassign(a,b,c) (*((PF2)_cfltcvt_tab[2]))(a,b,c)
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typedef void (* PF3)(char*);
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#define _forcdecpt(a) (*((PF3)_cfltcvt_tab[3]))(a)
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typedef int (* PF4)(DOUBLE*);
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#define _positive(a) (*((PF4)_cfltcvt_tab[4]))(a)
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typedef void (* PF5)(LONGDOUBLE*, char*, int, int, int);
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#define _cldcvt(a,b,c,d,e) (*((PF5)_cfltcvt_tab[5]))(a,b,c,d,e)
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#ifdef _M_IX86
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#pragma warning(default:4069)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* _INC_FLTINTRN */
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