273 lines
6.6 KiB
C
273 lines
6.6 KiB
C
/********************************************
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; File: SANE.h
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;
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;
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; Copyright Apple Computer, Inc.1986-90
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; All Rights Reserved
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;
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********************************************/
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#ifndef __TYPES__
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#include <TYPES.h>
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#endif
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#ifndef __SANE__
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#define __SANE__
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/* Decimal Representation Constants */
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#define SIGDIGLEN 0x001C
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#define DECSTROUTLEN 0x0050
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/* IEEE defualt environment constant */
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#define IEEEDEFAULTENV 0x0000
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/* Decimal formatting styles */
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#define FLOATDECIMAL 0x0000
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#define FIXEDDECIMAL 0x0001
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/* Exceptions */
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#define INVALID 0x0001
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#define UNDERFLOW 0x0002
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#define OVERFLOW 0x0004
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#define DIVBYZERO 0x0008
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#define INEXACT 0x0010
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/* Ordering relations */
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#define GREATERTHAN 0
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#define LESSTHAN 1
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#define EQUALTO 2
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#define UNORDERED 3
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typedef short relop ;
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/* Inquiry classes */
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#define SNAN 0
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#define QNAN 1
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#define INFINITE 2
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#define ZERONUM 3
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#define NORMALNUM 4
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#define DENORMALNUM 5
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typedef short numclass ;
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/* Environmental control */
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/* Rounding directions */
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#define TONEAREST 0
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#define UPWARD 1
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#define DOWNWARD 2
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#define TOWARDZERO 3
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typedef short rounddir ;
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/* Rounding precisions */
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#define EXTPRECISION 0
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#define DBLPRECISION 1
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#define FLOATPRECISION 2
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typedef short roundpre ;
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typedef short exception;
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typedef short environment;
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typedef struct decimal {
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short sgn; /* sign 0 for +, 1 for - */
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short exp; /* decimal exponent */
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struct {
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unsigned char length, text[SIGDIGLEN], unused;
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} sig; /* significant digits */
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} decimal, Decimal;
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struct decform {
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short style; /* FLOATDECIMAL or FIXEDDECIMAL */
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short digits;
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} ;
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typedef struct decform decform;
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typedef struct decform DecForm;
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typedef void (*haltvector)(void);
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Extended fabs (Extended x) ;
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/* Conversions between binary and decimal */
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void num2dec (DecForm *f,extended x,Decimal *d) ;
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/* d <-- x according to format f */
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Extended dec2num (Decimal *d) ;
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/* Dec2Num <-- d as Extended */
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/* Conversions between decimal formats */
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void str2dec (char *s,short *index,Decimal *d,short *validPrefix) ;
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/* On input Index is starting index into s.
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On output Index is one greater than index of last character of longest numeric substring.
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d <-- Decimal rep of longest numeric substring;
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validPrefix <-- s, beginning at Index, contains valid numeric string or valid prefix of some numeric string */
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void dec2str (DecForm *f,Decimal *d,char *s) ;
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/* s <-- d according to format f */
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/* Arithmetic, auxiliary and elementary functions */
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Extended remainder (Extended x,Extended y,short *quo) ;
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/* Remainder <-- x rem y; */
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/* quo <-- 7 low-order bits of integer quotient x/y */
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/* where -127 < quo < 127 */
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Extended sqrt (Extended x) ;
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/* square root */
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Extended rint (Extended x) ;
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/* round to integral value */
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Extended scalb (short n,Extended x) ;
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/* scale binary; scalb <-- x * 2^n */
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Extended logb (Extended x) ;
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/* binary log: binary exponent of normalized x */
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Extended copysign (Extended x,Extended y) ;
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/* CopySign <-- y with sign of x */
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Extended nextfloat (Extended x,Extended y) ;
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/* next float rep after (float) x in direction of (float) y */
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Extended nextdouble (Extended x,Extended y) ;
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/* next Double rep after (Double) x in direction of (Double) y */
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Extended nextextended (Extended x,Extended y) ;
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/* next extended representation after x in direction of y */
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Extended log2 (Extended x) ;
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/* base-2 logarithm */
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Extended log (Extended x) ;
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/* base-e logarithm */
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Extended log1 (Extended x) ;
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/* log(1 + x) */
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Extended exp2 (Extended x) ;
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/* base-2 exponential */
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Extended exp (Extended x) ;
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/* base-e exponential */
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Extended exp1 (Extended x) ;
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/* exp(x) - 1 */
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Extended power (Extended x,Extended y) ;
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/* general exponential: x ^ y */
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Extended ipower (Extended x,short i) ;
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/* integer exponential: x ^ i */
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Extended compound (Extended r,Extended n) ;
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/* compound: (1 + r) ^ n */
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Extended annuity (Extended r,Extended n) ;
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/* Annuity <-- (1 - (1+r)^(-n)) / r */
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Extended tan (Extended x) ;
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/* tangent */
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Extended sin (Extended x) ;
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/* Sine */
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Extended cos (Extended x) ;
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/* Cosine */
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Extended atan (Extended x) ;
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/* Arctangent */
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Extended randomx (Extended *x) ;
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/* returns next random number; updates x; */
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/* x must be integral, 1 <= x <= 2^31 - 2 */
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/* Inquiry Routines */
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numclass classfloat (Extended x) ;
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/* class of (float) x */
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numclass classdouble (Extended x) ;
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/* class of (Double) x */
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numclass classcomp (Extended x) ;
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/* class of (Comp) x */
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numclass classextended (Extended x) ;
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/* class of x */
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LongWord signnum (Extended x) ;
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/* 0 if sign bit clear, 1 if sign bit set */
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/* Environment access routines */
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void setexception (exception e,long b) ;
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/* clears e flags if b is 0, sets e flags otherwise; may cause halt */
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long testexception (exception e) ;
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/* return true if any e flag is set, return false otherwise */
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void sethalt (exception e,long b) ;
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/* set e halt enables if b is true, clear e halt enables otherwise */
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long testhalt (exception e) ;
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/* return true if any e halt is enabled, return false otherwise */
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void setround (rounddir r) ;
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/* set rounding direction to r */
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rounddir getround (void) ;
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/* return rounding direction */
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void setprecision (roundpre p) ;
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/* sets rnd'n precision to p */
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roundpre getprecision (void) ;
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void setenvironment (environment e) ;
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/* sets SANE environment to e */
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void getenvironment (environment *e) ;
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/* e <-- SANE environment */
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void procentry (environment *e) ;
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/* e <-- environment; environment <-- IEEE default env */
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void procexit (environment e) ;
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/* temp <-- current exceptions; */
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/* SANE environment <-- e; */
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/* signals exceptions in temp */
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haltvector gethaltvector (void) ;
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/* return SANE halt vector */
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void sethaltvector (haltvector v) ;
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/* halt vector <-- v */
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/* Comparison routine */
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relop relation (Extended x,Extended y) ;
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/* return Relation such that "x Relation y" is true */
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/* NaNs and Special Constants */
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extended nan( unsigned char c ); /* returns NaN with code c */
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Extended inf (void) ;
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/* returns infinity */
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Extended pi (void) ;
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/* returns pi */
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extern pascal void SANEBootInit(void) inline(0x010A,dispatcher);
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extern pascal void SANEStartUp(Word) inline(0x020A,dispatcher);
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extern pascal void SANEShutDown(void) inline(0x030A,dispatcher);
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extern pascal Word SANEVersion(void) inline(0x040A,dispatcher);
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extern pascal void SANEReset(void) inline(0x050A,dispatcher);
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extern pascal Word SANEStatus(void) inline(0x060A,dispatcher);
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extern pascal void SANEFP816() inline(0x090A,dispatcher);
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extern pascal void SANEDecStr816() inline(0x0A0A,dispatcher);
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extern pascal void SANEElems816() inline(0x0B0A,dispatcher);
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#endif
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