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ccos
Complex circular cosine.SYNOPSIS:
void ccos();
cmplx z, w;
ccos(&z, &w);
DESCRIPTION:
If
z = x + iy,
then
w = cos x cosh y - i sin x sinh y.
ACCURACY:
Relative error:
arithmetic domain # trials peak rms
DEC -10,+10 8400 4.5e-17 1.3e-17
IEEE -10,+10 30000 3.8e-16 1.0e-16