Searched refs:coskR (Results 1 – 1 of 1) sorted by relevance
224 { double kR = sqrt(kSq)*Rc, coskR, sinkR; in latticeGradientPrefac() local225 sincos(kR, &sinkR, &coskR); in latticeGradientPrefac()227 return (4*M_PI) * (2*(1.-coskR) - kR*sinkR)/(kSq*kSq); in latticeGradientPrefac()