operator-=()

derived_type& Chusov::Math::operator-=	(	Matrix< val1_t, alloc1_t, der1_t, policy1_t > &	left,
		const Matrix< val2_t, alloc2_t, der2_t, policy2_t > &	right
	)

Performs a subtraction of two matrices with an assignment of the result to the first operand.

Template Parameters

val1_t	is a type of an element of the left matrix.
alloc1_t	is a type of an allocator used by the left matrix.
der1_t	is a derived type of the first operand. See Matrix::derived_type.
policy1_t	is an execution policy of the first operand.
val2_t	is a type of an element of the right matrix.
alloc2_t	is a type of an allocator used by the right matrix.
der2_t	is a derived type of the second operand. See Matrix::derived_type.
policy2_t	is an execution policy of the second operand.

Parameters

left	is an lvalue reference to the left matrix from which the second operand is subtracted and to which the result is assigned.
right	is a reference to the right matrix.

Returns

Returns a reference to left cast to the

typename Matrix<val1_t, alloc1_t, der1_t, policy1_t>::derived_type

after the subtraction has been performed.

Remarks

The operation is defined only when elements of the first operand appertain to an additive group.

Exceptions

Chusov::Exceptions::InvalidParameterException

Dimensions of the matrices do not match.

Examples

chsvmath\algebraic_traits.cpp.