Initialize the interpreter math intrinsics
int SLang_init_slmath (void)
The SLang_init_slmath function initializes the interpreter's
mathematical intrinsic functions and makes them available to the
language. The intrinsic functions include sin, cos,
tan, etc... It returns 0 if successful, or -1
upon failure.
This function must be called after SLang_init_slang. It adds
the preprocessor symbol __SLMATH__ to the interpreter.
SLang_init_slang, SLang_init_slfile, SLang_init_slunix