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WebSVN – planix.SVN – Blame – /os/branches/feature_posix/sys/src/cmd/map/libmap/azequalarea.c – Rev 2

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#include <u.h>
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#include <libc.h>
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#include "map.h"
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int
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Xazequalarea(struct place *place, double *x, double *y)
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{
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	double r;
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	r = sqrt(1. - place->nlat.s);
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	*x = - r * place->wlon.s;
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	*y = - r * place->wlon.c;
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	return(1);
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}
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proj
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azequalarea(void)
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{
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	return(Xazequalarea);
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}