cos - Calculate the cosine of double number.
double cos -> double
1.0 cos -> 0.540302
Alternatives: Function cos_d (undocumented)
-> behaviour and synopsis are the same.
Hehl
8.6.1999
/home/abuild/rpmbuild/BUILD/nest-2.20.git-build/nest-2.20.git/sli/slimath.cc