shithub: plan9front

ref: ea2a5a33ca880e4f5e3950350bf4dbb4187f51b8
dir: /sys/src/cmd/plot/libplot/rvec.c/

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#include "mplot.h"
void rvec(double xx, double yy){
	e1->copyx += xx;
	e1->copyy += yy;
	vec(e1->copyx, e1->copyy);
}