asin - Calculate the arc sine of double number.
double asin -> double
1.0 asin -> 1.570796
Alternatives: Function asin_d (undocumented)
-> behaviour and synopsis are the same.
Diesmann
090225
/home/abuild/rpmbuild/BUILD/nest-2.20.git-build/nest-2.20.git/sli/slimath.cc