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99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
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/************************************************************
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Created: Monday, May 7, 1990 at 8:55 PM
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FixMath.h
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C Interface to the Macintosh Libraries
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Copyright Apple Computer, Inc. 1985-1991
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All rights reserved
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Change History (most recent first):
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<SM3> 8/4/93 JDR Sync with Reality and Sound Mgr.
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<7> 3/10/93 JDR Added kFix1.
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<6> 8/8/91 JL Update copyright
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<5> 10/26/90 JDR Made the Frac2x, Fix2x, X2Fix, and X2Frac traps in-line only for
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the non-mc68881 mode. Otherwise it has to be glue to the FPU
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libraries. (see JPO for more info)
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<4> 10/5/90 JDR Frac2X, Fix2X, X2Fix, and X2Frac are now inlines. They use to be
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a jsr to the SANE glue which was not only the wrong file for it,
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but is only called the trap with the autopop bit set, very
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silly.
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CHANGE LOG:
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19 Oct 90 JPO Made Frac2x, Fix2x, X2Fix, and X2Frac
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in-line trap calls in non-mc68881 mode.
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************************************************************/
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#ifndef __FIXMATH__
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#define __FIXMATH__
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#ifndef __TYPES__
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#include <Types.h>
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#endif
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enum {
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fixed1 = (long)0x00010000,
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fract1 = (long)0x40000000,
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positiveInfinity = (long)0x7FFFFFFF,
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negativeInfinity = (long)0x80000000
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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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pascal Fract Fix2Frac(Fixed x)
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= 0xA841;
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pascal long Fix2Long(Fixed x)
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= 0xA840;
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pascal Fixed Long2Fix(long x)
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= 0xA83F;
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pascal Fixed Frac2Fix(Fract x)
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= 0xA842;
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pascal Fract FracMul(Fract x,Fract y)
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= 0xA84A;
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pascal Fixed FixDiv(Fixed x,Fixed y)
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= 0xA84D;
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pascal Fract FracDiv(Fract x,Fract y)
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= 0xA84B;
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pascal Fract FracSqrt(Fract x)
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= 0xA849;
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pascal Fract FracSin(Fixed x)
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= 0xA848;
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pascal Fract FracCos(Fixed x)
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= 0xA847;
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pascal Fixed FixATan2(long x,long y)
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= 0xA818;
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#ifdef mc68881
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pascal extended Frac2X(Fract x);
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pascal extended Fix2X(Fixed x);
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pascal Fixed X2Fix(extended x);
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pascal Fract X2Frac(extended x);
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#else
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pascal extended Frac2X(Fract x)
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= 0xA845;
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pascal extended Fix2X(Fixed x)
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= 0xA843;
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pascal Fixed X2Fix(extended x)
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= 0xA844;
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pascal Fract X2Frac(extended x)
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= 0xA846;
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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
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