matvec.h File Reference

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Functions
void	mat2_rmul (double *A, double const *B)
	In-place right matrix-matrix multiplication for 2x2 matrices. More...
void	mat2_lmul (double const *A, double *B)
	In-place left matrix-matrix multiplication for 2x2 matrices. More...
void	mat2_vfms (double *C, double const *A, double const *B)
	Fused multiply-subtract for 2x2 matrices. More...
void	mat2_inv (double *invA, double const *A)
	Matrix inverse for 2x2 matrix. More...
void	mat4_rmul (double *A, double const *B)
	In-place right matrix-matrix multiplication for 4x4 matrices. More...
void	mat4_lmul (double const *A, double *B)
	In-place left matrix-matrix multiplication for 4x4 matrices. More...
void	mat4_vfms (double *C, double const *A, double const *B)
	Fused multiply-subtract for 4x4 matrices. More...
void	mat4_inv (double *invA, const double *A)
	Matrix inverse for 4x4 matrix. More...
void	mat4_vinv (double *invA, double const *A)
	Matrix inverse for 4x4 matrix. More...
void	mat4_inv2 (float *A)
	Matrix inverse for 4x4 matrix. More...

Function Documentation

mat2_inv()

void mat2_inv	(	double *	invA,
		double const *	A
	)

Matrix inverse for 2x2 matrix.

Parameters

invA	Pointer to inverse matrix.
A	Pointer to input matrix.

mat2_lmul()

void mat2_lmul	(	double const *	A,
		double *	B
	)

In-place left matrix-matrix multiplication for 2x2 matrices.

Parameters

A	Pointer to left input matrix.
B	Pointer to right input and output matrix.

mat2_rmul()

void mat2_rmul	(	double *	A,
		double const *	B
	)

In-place right matrix-matrix multiplication for 2x2 matrices.

Parameters

A	Pointer to left input and output matrix.
B	Pointer to right input matrix.

mat2_vfms()

void mat2_vfms	(	double *	C,
		double const *	A,
		double const *	B
	)

Fused multiply-subtract for 2x2 matrices.

Parameters

C	Pointer to output matrix.
A	Pointer to left input matrix.
B	Pointer to right input matrix.

mat4_inv()

void mat4_inv	(	double *	invA,
		const double *	A
	)

Matrix inverse for 4x4 matrix.

Note

This is a generic implementation without pivoting hardcoded for 4x4 matrices. Primary purpose is to confirm the avx2 implementations below

Parameters

invA	Pointer to inverse matrix.
A	Pointer to input matrix.

mat4_inv2()

void mat4_inv2

(

float *

A

)

Matrix inverse for 4x4 matrix.

Note

This is a slightly modifed version of Intel's SSE single-precision 4x4 matrix inverse using Cramer's rule.

Parameters

invA	Pointer to inverse matrix.
A	Pointer to input matrix.

mat4_lmul()

void mat4_lmul	(	double const *	A,
		double *	B
	)

In-place left matrix-matrix multiplication for 4x4 matrices.

Note

Function is optimized with avx2 intrinsics

Parameters

A	Pointer to left input matrix.
B	Pointer to right input and output matrix.

mat4_rmul()

void mat4_rmul	(	double *	A,
		double const *	B
	)

In-place right matrix-matrix multiplication for 4x4 matrices.

Note

Function is optimized with avx2 intrinsics

Parameters

A	Pointer to left input and output matrix.
B	Pointer to right input matrix.

mat4_vfms()

void mat4_vfms	(	double *	C,
		double const *	A,
		double const *	B
	)

Fused multiply-subtract for 4x4 matrices.

Note

Function is optimized with avx2 intrinsics

Parameters

C	Pointer to output matrix.
A	Pointer to left input matrix.
B	Pointer to right input matrix.

mat4_vinv()

void mat4_vinv	(	double *	invA,
		double const *	A
	)

Matrix inverse for 4x4 matrix.

Note

This is an avx2 double-precision translation of Intel's SSE single-precision 4x4 matrix inverse using Cramer's rule.

Parameters

invA	Pointer to inverse matrix.
A	Pointer to input matrix.