ade561d3e6
By default, Clang builds C code in GNU C11 mode, so it uses standard C99 semantics for the inline keyword: http://clang.llvm.org/compatibility.html#inline Closes #1399
25 lines
477 B
C
25 lines
477 B
C
#include <math.h>
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static inline unsigned int xy2tile(unsigned int x, unsigned int y)
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{
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unsigned int tile = 0;
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int i;
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for (i = 15; i >= 0; i--)
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{
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tile = (tile << 1) | ((x >> i) & 1);
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tile = (tile << 1) | ((y >> i) & 1);
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}
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return tile;
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}
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static inline unsigned int lon2x(double lon)
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{
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return round((lon + 180.0) * 65535.0 / 360.0);
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}
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static inline unsigned int lat2y(double lat)
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{
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return round((lat + 90.0) * 65535.0 / 180.0);
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}
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