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# FcMatrixRotate

## Name

FcMatrixRotate -- Rotate a matrix

## Synopsis

    #include <fontconfig/fontconfig.h>

``void `FcMatrixRotate``(FcMatrix *`matrix`, double `cos`, double `sin`);`

## Description

`FcMatrixRotate` rotates `matrix` by the angle who's sine is `sin` and cosine is `cos`. This is done by multiplying by the matrix:

      cos -sin
      sin  cos

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