105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/*******************************************************************
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* Pilot Software
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*
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* Copyright (c) 1994-1997, Palm Computing Inc., All Rights Reserved
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*
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*-------------------------------------------------------------------
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* FileName:
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* FloatMgr.h
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*
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* Description:
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* Floating point routines
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*
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* History:
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* 3/9/95 - Created by Ron Marianetti
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*
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*******************************************************************/
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#ifndef __FLOATMGR_H__
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#define __FLOATMGR_H__
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#include <Common.h>
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/************************************************************************
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* Constants
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***********************************************************************/
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#define fMaxLong ((Long)0x7FFFFFFF)
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#define fMinLong ((Long)0x80000000)
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/************************************************************************
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* Floating point type
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* An exponent of kExpInf represents infinity
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***********************************************************************/
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typedef struct {
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DWord man; // unsigned 32 bit
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SWord exp; // signed 16 bit
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SByte sign; // +/- 1
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} FloatType;
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#define kExpInf 16000
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/*******************************************************************
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* Floating pointer Library Errors
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* The constant fplErrorClass is defined in SystemMgr.h
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*******************************************************************/
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#define fplErrOutOfRange (fplErrorClass | 1)
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/************************************************************
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* Floating point manager procedures
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*************************************************************/
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#ifdef __cplusplus
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extern "C" {
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#endif
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Err FplInit(void)
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SYS_TRAP(sysTrapFplInit);
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void FplFree(void)
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SYS_TRAP(sysTrapFplFree);
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Err FplFToA(FloatType a, char* s)
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SYS_TRAP(sysTrapFplFToA);
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FloatType FplAToF(char* s)
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SYS_TRAP(sysTrapFplAToF);
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Err FplBase10Info(FloatType a, ULong* mantissaP, Int* exponentP,
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Int* signP)
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SYS_TRAP(sysTrapFplBase10Info);
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FloatType FplLongToFloat(Long x)
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SYS_TRAP(sysTrapFplLongToFloat);
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Long FplFloatToLong(FloatType f)
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SYS_TRAP(sysTrapFplFloatToLong);
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ULong FplFloatToULong(FloatType f)
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SYS_TRAP(sysTrapFplFloatToULong);
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FloatType FplMul(FloatType a, FloatType b)
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SYS_TRAP(sysTrapFplMul);
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FloatType FplAdd(FloatType a, FloatType b)
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SYS_TRAP(sysTrapFplAdd);
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FloatType FplSub(FloatType a, FloatType b)
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SYS_TRAP(sysTrapFplSub);
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FloatType FplDiv(FloatType dividend, FloatType divisor)
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SYS_TRAP(sysTrapFplDiv);
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#ifdef __cplusplus
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}
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#endif
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#endif //__FLOATMGR_H__
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