[gambit-list] Which function in libm are portable enough to assume that they will be on all platforms?

Joe Doyle Ardent gambit at ardent.nebcorp.com
Thu Oct 31 16:34:25 EDT 2013


On Thu, Oct 31, 2013 at 04:21:27PM -0400, Bradley Lucier wrote:
> 
> The following we don't have:
> 
> ln1p                  ; ln1p(x)=ln(1+x)
> arcsinh
> sinh
> 
> 
> So I need only flln1p, flasinh, and flsinh.  Which is not so much. 
> (But which may be more than what Windows provides, according to Joe's 
> email.)
> 

	Well, according to that page, Windows has flsinh, but lacks ln1p 
and asinh.  flasinh can be computed with a logarithm, and ln1p can be 
implemented fairly simply as well (see http://www.johndcook.com/cpp_log_one_plus_x.html).


-Joe


More information about the Gambit-list mailing list