jens
191af92d47
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76 lines
2.9 KiB
C
76 lines
2.9 KiB
C
/* +++Date last modified: 05-Jul-1997 */
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/*
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** SNIPMATH.H - Header file for SNIPPETS math functions and macros
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*/
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#ifndef SNIPMATH__H
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#define SNIPMATH__H
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#include <math.h>
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#include "sniptype.h"
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#include "round.h"
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/*
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** Callable library functions begin here
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*/
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void SetBCDLen(int n); /* Bcdl.C */
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long BCDtoLong(char *BCDNum); /* Bcdl.C */
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void LongtoBCD(long num, char BCDNum[]); /* Bcdl.C */
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double bcd_to_double(void *buf, size_t len, /* Bcdd.C */
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int digits);
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int double_to_bcd(double arg, char *buf, /* Bcdd.C */
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size_t length, size_t digits );
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DWORD ncomb1 (int n, int m); /* Combin.C */
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DWORD ncomb2 (int n, int m); /* Combin.C */
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void SolveCubic(double a, double b, double c, /* Cubic.C */
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double d, int *solutions,
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double *x);
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DWORD dbl2ulong(double t); /* Dbl2Long.C */
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long dbl2long(double t); /* Dbl2Long.C */
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double dround(double x); /* Dblround.C */
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/* Use #defines for Permutations and Combinations -- Factoryl.C */
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#define log10P(n,r) (log10factorial(n)-log10factorial((n)-(r)))
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#define log10C(n,r) (log10P((n),(r))-log10factorial(r))
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double log10factorial(double N); /* Factoryl.C */
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double fibo(unsigned short term); /* Fibo.C */
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double frandom(int n); /* Frand.C */
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double ipow(double x, int n); /* Ipow.C */
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int ispow2(int x); /* Ispow2.C */
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long double ldfloor(long double a); /* Ldfloor.C */
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int initlogscale(long dmax, long rmax); /* Logscale.C */
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long logscale(long d); /* Logscale.C */
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float MSBINToIEEE(float f); /* Msb2Ieee.C */
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float IEEEToMSBIN(float f); /* Msb2Ieee.C */
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int perm_index (char pit[], int size); /* Perm_Idx.C */
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int round_div(int n, int d); /* Rnd_Div.C */
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long round_ldiv(long n, long d); /* Rnd_Div.C */
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double rad2deg(double rad); /* Rad2Deg.C */
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double deg2rad(double deg); /* Rad2Deg.C */
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#include "pi.h"
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#ifndef PHI
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#define PHI ((1.0+sqrt(5.0))/2.0) /* the golden number */
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#define INV_PHI (1.0/PHI) /* the golden ratio */
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#endif
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/*
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** File: ISQRT.C
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*/
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struct int_sqrt {
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unsigned sqrt,
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frac;
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};
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void usqrt(unsigned long x, struct int_sqrt *q);
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#endif /* SNIPMATH__H */
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