vec2.h File Reference

#include <initializer_list>
#include <cmath>

Go to the source code of this file.

Classes
class	vec2
	Very simple 2-element vector class. More...
class	mat2
	Very simple 2x2 matrix class. More...

Functions
double	operator * (const vec2 &l, const vec2 &r)
	Vector scalar product. More...
vec2	operator * (const mat2 &L, const vec2 &r)
	Matrix-vector multiplication. More...
vec2	operator * (const vec2 &v, const double d)
	Vector-scalar multiplication (scaling) More...
vec2	operator * (const double d, const vec2 &v)
	Vector-scalar multiplication (scaling) More...
vec2	operator+ (const vec2 &l, const vec2 &r)
	Vector addition. More...
vec2	operator- (const vec2 &l, const vec2 &r)
	Vector subtraction. More...
double	norm (const vec2 &v)
	Vector L2 norm. More...

Function Documentation

norm()

double norm

(

const vec2 &

v

)

Vector L2 norm.

Parameters

v

Returns

square root of the sum of vector components' squares.

operator *() [1/4]

double operator *	(	const vec2 &	l,
		const vec2 &	r
	)

Vector scalar product.

Parameters

l
r

Returns

the scalar product of l*r

operator *() [2/4]

vec2 operator *	(	const mat2 &	L,
		const vec2 &	r
	)

Matrix-vector multiplication.

Parameters

L	square matrix
r	column vector

Returns

the vector L*r

operator *() [3/4]

vec2 operator *	(	const vec2 &	v,
		const double	d
	)

Vector-scalar multiplication (scaling)

Parameters

v	vector
d	scalar

Returns

the vector v*d (=d*v)

operator *() [4/4]

vec2 operator *	(	const double	d,
		const vec2 &	v
	)

Vector-scalar multiplication (scaling)

Parameters

d	scalar
v	vector

Returns

the vector d*v (=v*d)

operator+()

vec2 operator+	(	const vec2 &	l,
		const vec2 &	r
	)

Vector addition.

Parameters

l
r

Returns

l+r (=r+l)

operator-()

vec2 operator-	(	const vec2 &	l,
		const vec2 &	r
	)

Vector subtraction.

Parameters

l	minuend
r	subtrahend

Returns

l-r