?? gmconst.h
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// gmConst.h - graphics math constants//// libgm++: Graphics Math Library// Ferdi Scheepers and Stephen F May// 15 June 1994#ifndef GMCONST_H#define GMCONST_H// USEFUL CONSTANTSdouble const gm2PI = 6.28318530717958623200;double const gmDEGTORAD = 0.01745329251994329547;double const gmE = 2.71828182845904553488;double const gmEEXPPI = 23.14069263277927390732;double const gmGOLDEN = 1.61803398874989490253;double const gmINVPI = 0.31830988618379069122;double const gmLN10 = 2.30258509299404590109;double const gmLN2 = 0.69314718055994528623;double const gmLOG10E = 0.43429448190325187218;double const gmLOG2E = 1.44269504088896338700;double const gmPI = 3.14159265358979323846;double const gmPIDIV2 = 1.57079632679489655800;double const gmPIDIV4 = 0.78539816339744827900;double const gmRADTODEG = 57.29577951308232286465;double const gmSQRT2 = 1.41421356237309514547;double const gmSQRT2PI = 2.50662827463100024161;double const gmSQRT3 = 1.73205080756887719318;double const gmSQRT10 = 3.16227766016837952279;double const gmSQRTE = 1.64872127070012819416;double const gmSQRTHALF = 0.70710678118654757274;double const gmSQRTLN2 = 0.83255461115769768821;double const gmSQRTPI = 1.77245385090551588192;double const gmEPSILON = 1.0e-10;double const gmGOOGOL = 1.0e50;#endif?? 快捷鍵說明
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