math.h File Reference

Math header. More...

#include <utils.h>

Macros
#define	___MATH_H   0
#define	EXP   ((float64_t)(2.71828182845904523536L))
#define	LN2   ((float64_t)(0.69314718055994506418L))
#define	LN10   ((float64_t)(2.30258509299404590109L))
#define	PI   ((float64_t)(3.14159265358979323846L))
#define	PI_2   ((float64_t)(1.57079632679489661923L))
#define	PI_1_2   ((float64_t)(0.318309886183790671538L))
#define	PI_2_2   ((float64_t)(0.636619772367581343076L))
#define	math_log2(n)   (math_log(n) / LN2)
	! log2 of n
#define	math_log10(n)   (math_log(n) / LN10)
	! log10 of n
#define	MATH_EXP_MASK   0x7FF0000000000000ULL
	! exponent part of float64_t
#define	MATH_FRAC_MASK   0x000FFFFFFFFFFFFFULL
	! fraction part of float64_t

Functions
int64_t	math_ceil (float64_t num)
	ceil of given float number More...
int64_t	math_floor (float64_t num)
	floor of given float number More...
float64_t	math_power (float64_t base, float64_t p)
	power base with p More...
float64_t	math_exp (float64_t number)
	calculates exp^number More...
float64_t	math_log (float64_t number)
	calculates log given number at base exp More...
float64_t	math_antilog (float64_t power, float64_t base)
	calculates antilog value More...
float64_t	math_root (float64_t number, float64_t root)
	calculates root of given number at root More...
float64_t	math_sin (float64_t number)
	calculates sin of x More...
boolean_t	math_isnan (float64_t number)
	checks if given number is nan More...
boolean_t	math_isinf (float64_t number)
	checks if given number is infinite More...

Detailed Description

Math header.

This work is licensed under TURNSTONE OS Public License. Please read and understand latest version of Licence.

Function Documentation

math_antilog()

float64_t math_antilog	(	float64_t	power,
		float64_t	base
	)

calculates antilog value

Parameters

[in]	power	given number
[in]	base	log base

Returns

antilog value base^power

math_ceil()

int64_t math_ceil

(

float64_t

num

)

ceil of given float number

Parameters

[in]

num

given float number

Returns

ceiled value

math_exp()

float64_t math_exp

(

float64_t

number

)

calculates exp^number

Parameters

[in]

number

number to calculate

Returns

exp^number

math_floor()

int64_t math_floor

(

float64_t

num

)

floor of given float number

Parameters

[in]

num

given float number

Returns

floored value

math_isinf()

boolean_t math_isinf

(

float64_t

number

)

checks if given number is infinite

Parameters

[in]

number

number for calculation

Returns

true if number is infinite

math_isnan()

boolean_t math_isnan

(

float64_t

number

)

checks if given number is nan

Parameters

[in]

number

number for calculation

Returns

true if number is nan

math_log()

float64_t math_log

(

float64_t

number

)

calculates log given number at base exp

Parameters

[in]

number

number to calculate

Returns

log value at base exp

math_power()

float64_t math_power	(	float64_t	base,
		float64_t	p
	)

power base with p

Parameters

[in]	base	the base
[in]	p	the power

Returns

base^p with fast power algorithm

math_root()

float64_t math_root	(	float64_t	number,
		float64_t	root
	)

calculates root of given number at root

Parameters

[in]	number	given number
[in]	root	root to calculate

Returns

root result

math_sin()

float64_t math_sin

(

float64_t

number

)

calculates sin of x

Parameters

[in]

number

number for calculation

Returns

sin(number)