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38 #ifndef WCSLIB_WCSMATH
39 #define WCSLIB_WCSMATH
61 #define PI 3.141592653589793238462643
64 #define SQRT2 1.4142135623730950488
65 #define SQRT2INV 1.0/SQRT2
71 #define UNDEFINED 987654321.0e99
72 #define undefined(value) (value == UNDEFINED)
74 #endif // WCSLIB_WCSMATH