math_functions.h File Reference

#include "head.h"

Go to the source code of this file.

Functions
void	mtx_vec_mul (const real_t *mtx, const real_t *v, real_t *res, const uint32_t rows, const uint32_t cols)
void	mtx_transpose (const real_t *mtx, real_t *mtx_t, const uint32_t rows, const uint32_t cols)
void	vector_min (const real_t *v1, const real_t *v2, real_t *res, const uint32_t length)
void	vector_max (const real_t *v1, const real_t *v2, real_t *res, const uint32_t length)
void	vector_sub (const real_t *v1, const real_t *v2, real_t *res, const uint32_t length)
void	vector_add (const real_t *v1, const real_t *v2, real_t *res, const uint32_t length)
real_t	vector_mul (const real_t *v1, const real_t *v2, const uint32_t length)
void	vector_scalar_mul (const real_t *v1, const real_t scalar, real_t *res, const uint32_t length)
void	vector_elements_to_zero (real_t *v, const uint32_t length)
uint32_t	vector_is_equal (const real_t *v1, const real_t *v2, const uint32_t length)
void	vector_copy (const real_t *v1, real_t *v2, const uint32_t length)
void	vector_max_with_zero (real_t *v, const uint32_t length)
real_t	vector_norm_2 (real_t *v, const uint32_t length)
real_t	abs_2 (const real_t a)
real_t	obj (const real_t *z, const real_t *H, const real_t *c, real_t *temp)

Detailed Description

Header for the internal math library. Contains basic vector and matrix operations. The library is tried to be as optimized as possible.

Definition in file math_functions.h.

Function Documentation

real_t abs_2

(

const real_t

a

)

return the absolute value of the input

Definition at line 177 of file math_functions.c.

void mtx_transpose	(	const real_t *	mtx,
		real_t *	mtx_t,
		const uint32_t	rows,
		const uint32_t	cols
	)

Computes the transpose of the matrix: mtx_t = transpose(mtx)

Definition at line 52 of file math_functions.c.

void mtx_vec_mul	(	const real_t *	mtx,
		const real_t *	v,
		real_t *	res,
		const uint32_t	rows,
		const uint32_t	cols
	)

matrix-vector multiplication: res = mtx * v

Definition at line 23 of file math_functions.c.

real_t obj	(	const real_t *	z,
		const real_t *	H,
		const real_t *	c,
		real_t *	temp
	)

compute the primal objective function

Definition at line 184 of file math_functions.c.

void vector_add	(	const real_t *	v1,
		const real_t *	v2,
		real_t *	res,
		const uint32_t	length
	)

vector addition res = v1 + v2

Definition at line 97 of file math_functions.c.

void vector_copy	(	const real_t *	v1,
		real_t *	v2,
		const uint32_t	length
	)

copy a vector element by element: v2 = v1

Definition at line 141 of file math_functions.c.

void vector_elements_to_zero	(	real_t *	v,
		const uint32_t	length
	)

set all elements in vector v to zero

Definition at line 123 of file math_functions.c.

uint32_t vector_is_equal	(	const real_t *	v1,
		const real_t *	v2,
		const uint32_t	length
	)

returns true if all elements in the two vectors are equal

Definition at line 131 of file math_functions.c.

void vector_max	(	const real_t *	v1,
		const real_t *	v2,
		real_t *	res,
		const uint32_t	length
	)

compare two vectors element by element, and returns the largest element of the two: res = max(v1,v2)

Definition at line 78 of file math_functions.c.

void vector_max_with_zero	(	real_t *	v,
		const uint32_t	length
	)

project a vector on all positive numbers: v = max(v,0.0)

Definition at line 149 of file math_functions.c.

void vector_min	(	const real_t *	v1,
		const real_t *	v2,
		real_t *	res,
		const uint32_t	length
	)

compare two vectors element by element, and returns the smallest element of the two: res = min(v1,v2)

Definition at line 67 of file math_functions.c.

real_t vector_mul	(	const real_t *	v1,
		const real_t *	v2,
		const uint32_t	length
	)

vector multiplication: res = v1 * v2

Definition at line 105 of file math_functions.c.

real_t vector_norm_2	(	real_t *	v,
		const uint32_t	length
	)

compute the euclidean norm of the vector v

Definition at line 158 of file math_functions.c.

void vector_scalar_mul	(	const real_t *	v1,
		const real_t	scalar,
		real_t *	res,
		const uint32_t	length
	)

Vector times a scalar: res = v1 * scalar

Definition at line 115 of file math_functions.c.

void vector_sub	(	const real_t *	v1,
		const real_t *	v2,
		real_t *	res,
		const uint32_t	length
	)

vector subtract: res = v1 - v2

Definition at line 89 of file math_functions.c.