Searched refs:PI_2 (Results 1 - 2 of 2) sorted by relevance

/netgear-R7000-V1.0.7.12_1.2.5/ap/gpl/libpng/libpng-1.2.50/contrib/gregbook/
H A Drpng2-win.c104 #define PI_2 (PI*0.5) macro
977 angle = (x == 0)? PI_2 : atan((double)y / (double)x);
H A Drpng2-x.c121 #define PI_2 (PI*0.5) macro
1247 angle = (x == 0)? PI_2 : atan((double)y / (double)x);
2012 angle = (x == 0)? PI_2 : atan((double)y / (double)x);

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