trange.c - plan9port - [fork] Plan 9 from user space
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       trange.c (309B)
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            1 #include "mplot.h"
            2 void range(double x0, double y0, double x1, double y1){
            3         e1->xmin = x0;
            4         e1->ymin = y0;
            5         e1->scalex = e1->sidex / (x1 - x0 );
            6         e1->scaley = e1->sidey / (y1 - y0 );
            7         e1->quantum=e0->quantum/sqrt(e1->scalex*e1->scalex +
            8                 e1->scaley*e1->scaley);
            9         if(e1->quantum < .01)
           10                 e1->quantum = .01;
           11 }