mneg ( m -- m' )
Matrix operations

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Vocabulary
math.matrices

Inputs

m

a matrix

Outputs

m'

a matrix

Word description
Negate (invert the sign) of every element in the matrix. The resulting matrix is called the additive inverse of the input matrix.

Notes

•	This word is the companion variant of mabs.
•	This word is intended for use with "flat" (2-dimensional) matrices.
•	This word assumes that elements of the input matrix are compatible with the following words: neg ( x -- -x )

Examples

USING: math.matrices prettyprint ; { { 5 9 } { 15 -17 } } mneg .
{ { -5 -9 } { -15 17 } }

Definition

USING: math.vectors sequences ;

IN: math.matrices

: mneg ( m -- m' ) [ vneg ] map ;