FcMatrixRotate(3)                                            FcMatrixRotate(3)



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

Fontconfig 2.18.3               23 August 2026               FcMatrixRotate(3)