HPGCC3 Documentation 3.0 R003

math.h File Reference

Go to the source code of this file.

Defines

#define _LONGLONG_DEF
#define min(a, b)   ((a) < (b) ? (a) : (b))
#define max(a, b)   ((a) > (b) ? (a) : (b))
#define abs(a)   ((a) < 0 ? -(a) : (a))
#define log   __ieee754_log
#define log10   __ieee754_log10
#define exp   __ieee754_exp
#define pow   __ieee754_pow
#define sqrt   __ieee754_sqrt
#define asin   __ieee754_asin
#define acos   __ieee754_acos
#define atan2   __ieee754_atan2
#define log2(x)   (log(x) / M_LOG2_E)
#define _fabs(x)   ( (x) < 0.0 ? (-x) : (x) )
#define M_E   2.7182818284590452354
#define M_LOG2E   1.4426950408889634074
#define M_LOG10E   0.43429448190325182765
#define M_LN2   0.69314718055994530942
#define M_LN10   2.30258509299404568402
#define M_PI   3.14159265358979323846
#define M_TWOPI   (M_PI * 2.0)
#define M_PI_2   1.57079632679489661923
#define M_PI_4   0.78539816339744830962
#define M_3PI_4   2.3561944901923448370E0
#define M_SQRTPI   1.77245385090551602792981
#define M_1_PI   0.31830988618379067154
#define M_2_PI   0.63661977236758134308
#define M_2_SQRTPI   1.12837916709551257390
#define M_SQRT2   1.41421356237309504880
#define M_SQRT1_2   0.70710678118654752440
#define M_LN2LO   1.9082149292705877000E-10
#define M_LN2HI   6.9314718036912381649E-1
#define M_SQRT3   1.73205080756887719000
#define M_IVLN10   0.43429448190325182765
#define M_LOG2_E   0.693147180559945309417
#define M_INVLN2   1.4426950408889633870E0
#define prob(p)   ((p) >= 1.0 ? 1 : random() < (p))
 Returns TRUE (1) if a uniform distributed random variable is less than p.
#define ilog10   qlog10
#define MATH_ERR_NEWTON_INVALID   -999.666

Typedefs

typedef unsigned long long ULONGLONG
typedef long long LONGLONG
typedef double(* DFUNC1 )(double)

Functions

double ipow (double x, int n)
double i10powx (int n)
double assemble_double (unsigned int sign, unsigned long long mantissa, int exponent)
int _i10pow64 (int exp10, unsigned long long *mant)
double square (double x)
double round (double a)
double modf (double x, double *iptr)
double frexp (double x, int *exp)
double scalbn (double x, int n)
double copysign (double x, double y)
double __ieee754_log (double x)
double __ieee754_log10 (double x)
double __ieee754_exp (double x)
double __ieee754_pow (double x, double y)
double __ieee754_sqrt (double x)
double __ieee754_asin (double x)
double __ieee754_acos (double x)
double __ieee754_atan2 (double y, double x)
double sin (double x)
double cos (double x)
double tan (double x)
double atan (double x)
double floor (double x)
double ceil (double x)
double fabs (double x)
double random ()
 53 bit pseudo RNG on [0,1)
double gauss ()
 Returns a normal distributed random number.
double normal (double mu, double sigma)
 Returns a normal distributed random number with selected parameters.
int qlog10 (double x, double *y)
 find y and return so that x=y*(10**return)
double dround (double value, int digits)
 Round value to digits places towards +/- infinity.
double df (int n, DFUNC1 f, double x)
double newton (DFUNC1 f, double x0, double y)

Define Documentation

#define _fabs (   x)    ( (x) < 0.0 ? (-x) : (x) )

Definition at line 106 of file math.h.

#define _LONGLONG_DEF

Definition at line 22 of file math.h.

#define abs (   a)    ((a) < 0 ? -(a) : (a))

Definition at line 45 of file math.h.

#define acos   __ieee754_acos

Definition at line 102 of file math.h.

#define asin   __ieee754_asin

Definition at line 101 of file math.h.

#define atan2   __ieee754_atan2

Definition at line 103 of file math.h.

#define exp   __ieee754_exp

Definition at line 97 of file math.h.

#define ilog10   qlog10

Definition at line 179 of file math.h.

#define log   __ieee754_log

Definition at line 95 of file math.h.

#define log10   __ieee754_log10

Definition at line 96 of file math.h.

#define log2 (   x)    (log(x) / M_LOG2_E)

Definition at line 105 of file math.h.

#define M_1_PI   0.31830988618379067154

Definition at line 121 of file math.h.

#define M_2_PI   0.63661977236758134308

Definition at line 122 of file math.h.

#define M_2_SQRTPI   1.12837916709551257390

Definition at line 123 of file math.h.

#define M_3PI_4   2.3561944901923448370E0

Definition at line 119 of file math.h.

#define M_E   2.7182818284590452354

Definition at line 110 of file math.h.

#define M_INVLN2   1.4426950408889633870E0

Definition at line 131 of file math.h.

#define M_IVLN10   0.43429448190325182765

Definition at line 129 of file math.h.

#define M_LN10   2.30258509299404568402

Definition at line 114 of file math.h.

#define M_LN2   0.69314718055994530942

Definition at line 113 of file math.h.

#define M_LN2HI   6.9314718036912381649E-1

Definition at line 127 of file math.h.

#define M_LN2LO   1.9082149292705877000E-10

Definition at line 126 of file math.h.

#define M_LOG10E   0.43429448190325182765

Definition at line 112 of file math.h.

#define M_LOG2_E   0.693147180559945309417

Definition at line 130 of file math.h.

#define M_LOG2E   1.4426950408889634074

Definition at line 111 of file math.h.

#define M_PI   3.14159265358979323846

Definition at line 115 of file math.h.

#define M_PI_2   1.57079632679489661923

Definition at line 117 of file math.h.

#define M_PI_4   0.78539816339744830962

Definition at line 118 of file math.h.

#define M_SQRT1_2   0.70710678118654752440

Definition at line 125 of file math.h.

#define M_SQRT2   1.41421356237309504880

Definition at line 124 of file math.h.

#define M_SQRT3   1.73205080756887719000

Definition at line 128 of file math.h.

#define M_SQRTPI   1.77245385090551602792981

Definition at line 120 of file math.h.

#define M_TWOPI   (M_PI * 2.0)

Definition at line 116 of file math.h.

#define MATH_ERR_NEWTON_INVALID   -999.666

Definition at line 200 of file math.h.

#define max (   a,
 
)    ((a) > (b) ? (a) : (b))

Definition at line 41 of file math.h.

#define min (   a,
 
)    ((a) < (b) ? (a) : (b))

Definition at line 37 of file math.h.

#define pow   __ieee754_pow

Definition at line 98 of file math.h.

#define prob (   p)    ((p) >= 1.0 ? 1 : random() < (p))

Returns TRUE (1) if a uniform distributed random variable is less than p.

Definition at line 159 of file math.h.

#define sqrt   __ieee754_sqrt

Definition at line 99 of file math.h.


Typedef Documentation

typedef double(* DFUNC1)(double)

Definition at line 191 of file math.h.

typedef long long LONGLONG

Definition at line 21 of file math.h.

typedef unsigned long long ULONGLONG

Definition at line 20 of file math.h.


Function Documentation

double __ieee754_acos ( double  x)
double __ieee754_asin ( double  x)
double __ieee754_atan2 ( double  y,
double  x 
)
double __ieee754_exp ( double  x)
double __ieee754_log ( double  x)
double __ieee754_log10 ( double  x)
double __ieee754_pow ( double  x,
double  y 
)
double __ieee754_sqrt ( double  x)
int _i10pow64 ( int  exp10,
unsigned long long *  mant 
)
double assemble_double ( unsigned int  sign,
unsigned long long  mantissa,
int  exponent 
)
double atan ( double  x)
double ceil ( double  x)
double copysign ( double  x,
double  y 
)
double cos ( double  x)
double df ( int  n,
DFUNC1  f,
double  x 
)
double dround ( double  value,
int  digits 
)

Round value to digits places towards +/- infinity.

Parameters:
valueThe double value to round
digitsNumber of decimal places
Return values:
Therounded value
double fabs ( double  x)
double floor ( double  x)
double frexp ( double  x,
int *  exp 
)
double gauss ( )

Returns a normal distributed random number.

Return values:
Anormalized,normal-distributed random number with mu=0.0 and sigma = 1.0
double i10powx ( int  n)
double ipow ( double  x,
int  n 
)
double modf ( double  x,
double *  iptr 
)
double newton ( DFUNC1  f,
double  x0,
double  y 
)
double normal ( double  mu,
double  sigma 
)

Returns a normal distributed random number with selected parameters.

Return values:
Anormal-distributed random number with parameters (mu, sigma)
int qlog10 ( double  x,
double *  y 
)

find y and return so that x=y*(10**return)

Parameters:
xsource number
*ylocation for the remainder term
Return values:
integerlog10 of x
double random ( )

53 bit pseudo RNG on [0,1)

Return values:
Adouble pseudo random number, based on mwc() generator
double round ( double  a)
double scalbn ( double  x,
int  n 
)
double sin ( double  x)
double square ( double  x)
double tan ( double  x)