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1 #include <u.h>2 #include <libc.h>3 #include "map.h"6 static int7 Xlaue(struct place *place, double *x, double *y)8 {9 double r;10 if(place->nlat.l<PI/4+FUZZ)11 return(-1);12 r = tan(PI-2*place->nlat.l);13 if(r>3)14 return(-1);15 *x = - r * place->wlon.s;16 *y = - r * place->wlon.c;17 return(1);18 }20 proj21 laue(void)22 {23 return(Xlaue);24 }