/*** *fltintrn.h - contains declarations of internal floating point types, * routines and variables * * Copyright (c) 1985-2001, Microsoft Corporation. All rights reserved. * *Purpose: * Declares floating point types, routines and variables used * internally by the C run-time. * * [Internal] * *Revision History: * 10-20-88 JCR Changed 'DOUBLE' to 'double' for 386 * 08-15-89 GJF Fixed copyright, indents * 10-30-89 GJF Fixed copyright (again) * 03-02-90 GJF Added #ifndef _INC_STRUCT stuff. Also, cleaned up * the formatting a bit. * 03-05-90 GJF Fixed up the arg types in protoypes. Also, added * #include * 03-22-90 GJF Made _fltin(), _fltin2(), _fltout() and _fltout2() * _CALLTYPE2 (for now) and added a prototype for * _fptostr(). * 08-01-90 SBM Moved _cftoe() and _cftof() here from internal.h * and _cfltcvt_tab from input.c and output.c, * added typedefs for _cfltcvt_tab entries, * renamed module from to and * adjusted #ifndef stuff to #ifndef _INC_FLTINTRN * 08-29-90 SBM Changed type of _cfltcvt_tab[] to agree with * definition in cmiscdat.c * 04-26-91 SRW Removed level 3 warnings * 08-26-91 JCR Changed MIPS to _MIPS_, ANSI naming * 08-06-92 GJF Function calling type and variable type macros. Revised * use of target processor macros. * 11-09-92 GJF Fixed preprocessing conditionals for MIPS. * 01-09-93 SRW Remove usage of MIPS and ALPHA to conform to ANSI * Use _MIPS_ and _ALPHA_ instead. * 01-21-93 GJF Removed support for C6-386's _cdecl. * 04-06-93 SKS Replace _CRTAPI1/2 with __cdecl, _CRTVAR1 with nothing * 09-01-93 GJF Merged Cuda and NT SDK versions. * 10-13-93 GJF Dropped _MIPS_. Replaced _ALPHA_ with _M_ALPHA. * 10-29-93 GJF Disabled the ever-annoying 4069 warning. * 10-02-94 BWT Add PPC support. * 12-15-94 XY merged with mac header * 02-14-95 CFW Clean up Mac merge. * 03-29-95 CFW Add error message to internal headers. * 12-14-95 JWM Add "#pragma once". * 02-05-97 GJF Deleted obsolete support for _CRTAPI* and _NTSDK. * Replaced (defined(_M_MPPC) || defined(_M_M68K)) with * defined(_MAC) where appropriate. Replaced _CALLTYPE2 * with __cdecl. Also, detab-ed. * 05-17-99 PML Remove all Macintosh support. * 09-05-00 GB Changed the defination of fltout functions. Use DOUBLE * instead of double * ****/ #if _MSC_VER > 1000 /*IFSTRIP=IGN*/ #pragma once #endif #ifndef _INC_FLTINTRN #define _INC_FLTINTRN #ifndef _CRTBLD /* * This is an internal C runtime header file. It is used when building * the C runtimes only. It is not to be used as a public header file. */ #error ERROR: Use of C runtime library internal header file. #endif /* _CRTBLD */ #ifdef __cplusplus extern "C" { #endif #include /* Define _CRTIMP */ #ifndef _CRTIMP #ifdef CRTDLL #define _CRTIMP __declspec(dllexport) #else /* ndef CRTDLL */ #ifdef _DLL #define _CRTIMP __declspec(dllimport) #else /* ndef _DLL */ #define _CRTIMP #endif /* _DLL */ #endif /* CRTDLL */ #endif /* _CRTIMP */ /* Define __cdecl for non-Microsoft compilers */ #if ( !defined(_MSC_VER) && !defined(__cdecl) ) #define __cdecl #endif /* * For MS C for the x86 family, disable the annoying "long double is the * same precision as double" warning */ #ifdef _M_IX86 #pragma warning(disable:4069) #endif /* * structs used to fool the compiler into not generating floating point * instructions when copying and pushing [long] double values */ #ifndef DOUBLE typedef struct { double x; } DOUBLE; #endif #ifndef LONGDOUBLE typedef struct { #if defined(_M_MRX000) || defined(_M_ALPHA) || defined(_M_PPC) /* * No long double type for MIPS, ALPHA, PPC. */ double x; #else /* * Assume there is a long double type */ long double x; #endif } LONGDOUBLE; #endif /* * typedef for _fltout */ typedef struct _strflt { int sign; /* zero if positive otherwise negative */ int decpt; /* exponent of floating point number */ int flag; /* zero if okay otherwise IEEE overflow */ char *mantissa; /* pointer to mantissa in string form */ } *STRFLT; /* * typedef for _fltin */ typedef struct _flt { int flags; int nbytes; /* number of characters read */ long lval; double dval; /* the returned floating point number */ } *FLT; /* floating point conversion routines, keep in sync with mrt32\include\convert.h */ char *_cftoe(double *, char *, int, int); char *_cftof(double *, char *, int); void __cdecl _fptostr(char *, int, STRFLT); #ifdef _MT STRFLT __cdecl _fltout2( DOUBLE, STRFLT, char * ); FLT __cdecl _fltin2( FLT , const char *, int, int, int ); #else STRFLT __cdecl _fltout( DOUBLE ); FLT __cdecl _fltin( const char *, int, int, int ); #endif /* * table of pointers to floating point helper routines * * We can't specify the prototypes for the entries of the table accurately, * since different functions in the table have different arglists. * So we declare the functions to take and return void (which is the * correct prototype for _fptrap(), which is what the entries are all * initialized to if no floating point is loaded) and cast appropriately * on every usage. */ typedef void (* PFV)(void); extern PFV _cfltcvt_tab[6]; typedef void (* PF0)(DOUBLE*, char*, int, int, int); #define _cfltcvt(a,b,c,d,e) (*((PF0)_cfltcvt_tab[0]))(a,b,c,d,e) typedef void (* PF1)(char*); #define _cropzeros(a) (*((PF1)_cfltcvt_tab[1]))(a) typedef void (* PF2)(int, char*, char*); #define _fassign(a,b,c) (*((PF2)_cfltcvt_tab[2]))(a,b,c) typedef void (* PF3)(char*); #define _forcdecpt(a) (*((PF3)_cfltcvt_tab[3]))(a) typedef int (* PF4)(DOUBLE*); #define _positive(a) (*((PF4)_cfltcvt_tab[4]))(a) typedef void (* PF5)(LONGDOUBLE*, char*, int, int, int); #define _cldcvt(a,b,c,d,e) (*((PF5)_cfltcvt_tab[5]))(a,b,c,d,e) #ifdef _M_IX86 #pragma warning(default:4069) #endif #ifdef __cplusplus } #endif #endif /* _INC_FLTINTRN */