[Rd] prototypes for z_sin() and z_cos()

[Robin Hankin]

Hi

I have been looking at complex.c and want to access z_cos() and z_sin 
() from
C in one of my packages.

There doesn't seem to be a corresponding header file: there is no  
complex.h file.

Where are the prototypes of z_sin() and z_cos() for these functions?

grepping didn't help me:

                  find ~/downloads/R-2.1.1/  -name "*.h " | xargs  
egrep "z_cos"

returned empty.

How do I access z_sin() from my c code?


--
Robin Hankin
Uncertainty Analyst
National Oceanography Centre, Southampton
European Way, Southampton SO14 3ZH, UK
  tel  023-8059-7743