Provided by: libfontconfig1-dev_2.12.6-0ubuntu2_amd64 

NAME
FcMatrixScale - Scale a matrix
SYNOPSIS
#include <fontconfig/fontconfig.h>
void FcMatrixScale (FcMatrix *matrix, double sx, double dy);
DESCRIPTION
FcMatrixScale multiplies matrix x values by sx and y values by dy. This is done by multiplying by the
matrix:
sx 0
0 dy
Fontconfig 2.12.6 05 April 2018 FcMatrixScale(3)