| 1 | /* +++Date last modified: 05-Jul-1997 */
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| 2 |
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| 3 | /*
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| 4 | ** SNIPMATH.H - Header file for SNIPPETS math functions and macros
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| 5 | */
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| 6 |
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| 7 | #ifndef SNIPMATH__H
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| 8 | #define SNIPMATH__H
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| 9 |
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| 10 | #include <math.h>
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| 11 | #include "basicmath-sniptype.h"
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| 12 | #include "basicmath-round.h"
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| 13 |
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| 14 | /*
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| 15 | ** Callable library functions begin here
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| 16 | */
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| 17 |
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| 18 | void SetBCDLen(int n); /* Bcdl.C */
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| 19 | long BCDtoLong(char *BCDNum); /* Bcdl.C */
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| 20 | void LongtoBCD(long num, char BCDNum[]); /* Bcdl.C */
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| 21 | double bcd_to_double(void *buf, size_t len, /* Bcdd.C */
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| 22 | int digits);
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| 23 | int double_to_bcd(double arg, char *buf, /* Bcdd.C */
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| 24 | size_t length, size_t digits );
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| 25 | DWORD ncomb1 (int n, int m); /* Combin.C */
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| 26 | DWORD ncomb2 (int n, int m); /* Combin.C */
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| 27 | void SolveCubic(double a, double b, double c, /* Cubic.C */
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| 28 | double d, int *solutions,
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| 29 | double *x);
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| 30 | DWORD dbl2ulong(double t); /* Dbl2Long.C */
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| 31 | long dbl2long(double t); /* Dbl2Long.C */
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| 32 | double dround(double x); /* Dblround.C */
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| 33 |
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| 34 | /* Use #defines for Permutations and Combinations -- Factoryl.C */
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| 35 |
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| 36 | #define log10P(n,r) (log10factorial(n)-log10factorial((n)-(r)))
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| 37 | #define log10C(n,r) (log10P((n),(r))-log10factorial(r))
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| 38 |
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| 39 | double log10factorial(double N); /* Factoryl.C */
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| 40 |
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| 41 | double fibo(unsigned short term); /* Fibo.C */
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| 42 | double frandom(int n); /* Frand.C */
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| 43 | double ipow(double x, int n); /* Ipow.C */
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| 44 | int ispow2(int x); /* Ispow2.C */
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| 45 | long double ldfloor(long double a); /* Ldfloor.C */
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| 46 | int initlogscale(long dmax, long rmax); /* Logscale.C */
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| 47 | long logscale(long d); /* Logscale.C */
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| 48 |
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| 49 | float MSBINToIEEE(float f); /* Msb2Ieee.C */
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| 50 | float IEEEToMSBIN(float f); /* Msb2Ieee.C */
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| 51 | int perm_index (char pit[], int size); /* Perm_Idx.C */
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| 52 | int round_div(int n, int d); /* Rnd_Div.C */
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| 53 | long round_ldiv(long n, long d); /* Rnd_Div.C */
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| 54 | double rad2deg(double rad); /* Rad2Deg.C */
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| 55 | double deg2rad(double deg); /* Rad2Deg.C */
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| 56 |
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| 57 | #include "basicmath-pi.h"
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| 58 | #ifndef PHI
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| 59 | #define PHI ((1.0+sqrt(5.0))/2.0) /* the golden number */
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| 60 | #define INV_PHI (1.0/PHI) /* the golden ratio */
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| 61 | #endif
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| 62 |
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| 63 | /*
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| 64 | ** File: ISQRT.C
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| 65 | */
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| 66 |
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| 67 | struct int_sqrt {
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| 68 | unsigned sqrt,
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| 69 | frac;
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| 70 | };
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| 71 |
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| 72 | void usqrt(unsigned long x, struct int_sqrt *q);
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| 73 |
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| 74 |
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| 75 | #endif /* SNIPMATH__H */
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