matrix2i.c File Reference

#include <vecmat.h>

Go to the source code of this file.

Functions
matrix2i	mat2i_identity (void)
	Constructs the 2x2 integer identity matrix.
matrix2i	mat2i_mul (const matrix2i a, const matrix2i b)
	Multiplies two 2x2 integer matrices (a * b).
matrix2i	mat2i_transpose (const matrix2i m)
	Computes the transpose of a 2x2 integer matrix.
matrix2i	mat2i_inverse (const matrix2i m)
	Computes the inverse of a 2x2 integer matrix.
vm_int_t	mat2i_determinant (const matrix2i m)
	Calculates the determinant of the given 2x2 integer matrix.
vector2i	mat2i_mul_vec2i (const matrix2i m, const vector2i v)
	Multiplies a 2x2 integer matrix by a vector2i.

Function Documentation

mat2i_determinant()

vm_int_t mat2i_determinant

(

const matrix2i

m

)

Calculates the determinant of the given 2x2 integer matrix.

Parameters

m	The matrix.

Returns

The determinant value (m.v[0]*m.v[3] - m.v[1]*m.v[2]).

Definition at line 73 of file matrix2i.c.

References matrix2i::v.

Referenced by mat2i_inverse_ptr().

mat2i_identity()

matrix2i mat2i_identity

(

void

)

Constructs the 2x2 integer identity matrix.

See mat2i_identity_ptr instead.

Returns

The identity matrix2i.

Definition at line 14 of file matrix2i.c.

References mat2i_identity_ptr().

mat2i_inverse()

matrix2i mat2i_inverse

(

const matrix2i

m

)

Computes the inverse of a 2x2 integer matrix.

See mat2i_inverse_ptr instead.

Parameters

m	The input matrix.

Returns

The inverse matrix2i.

Definition at line 60 of file matrix2i.c.

References mat2i_inverse_ptr().

mat2i_mul()

matrix2i mat2i_mul	(	const matrix2i	a,
		const matrix2i	b )

Multiplies two 2x2 integer matrices (a * b).

See mat2i_mul_ptr instead.

Parameters

a	The first matrix.
b	The second matrix.

Returns

The resulting product matrix2i.

Definition at line 30 of file matrix2i.c.

References mat2i_mul_ptr().

mat2i_mul_vec2i()

vector2i mat2i_mul_vec2i	(	const matrix2i	m,
		const vector2i	v )

Multiplies a 2x2 integer matrix by a vector2i.

See mat2i_mul_vec2i_ptr instead.

Parameters

m	Input matrix.
v	Input vector.

Returns

The resulting vector2i.

Definition at line 87 of file matrix2i.c.

References mat2i_mul_vec2i_ptr().

mat2i_transpose()

matrix2i mat2i_transpose

(

const matrix2i

m

)

Computes the transpose of a 2x2 integer matrix.

See mat2i_transpose_ptr instead.

Parameters

m	The input matrix.

Returns

The transposed matrix2i.

Definition at line 45 of file matrix2i.c.

References mat2i_transpose_ptr().