1{
2    gbname = $3
3    gbrename = $3
4    gsub (/GxB_/, "GxM_", gbrename) ;
5    gsub (/GrB_/, "GrM_", gbrename) ;
6    gsub (/GB_/, "GM_", gbrename) ;
7    printf "#define %s %s\n", gbname, gbrename
8}
9