FcMatrixRotate.3 revision a4e54154 
 auto-generated by docbook2man-spec from docbook-utils package
 "FcMatrixRotate" "3" "31 3月 2022" "Fontconfig 2.14.0" ""
 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