can't link against math.h

[blubee blubeeme]

Thanks for the tips

I didn't know that it wasn't in the std c library and was GNU specific
code. I think I'll take Montgomery-Smith
advice and implement it as this:

#define exp10f(x) (powf(10.,x))

Porting software is some interesting work.

On Thu, Oct 26, 2017 at 4:41 PM, Bob Eager <rde at tavi.co.uk> wrote:

> On Thu, 26 Oct 2017 10:05:00 +0800
> blubee blubeeme <gurenchan at gmail.com> wrote:
>
> > I wrote a simple test program to test and see if math.h has the
> > function: exp10f
> >
> > #include <math.h>
> >
> > int main(int argc, char** argv)
> > {
> > (void)argv;
> > return ((int*)(&exp10))[argc];
> > }
> >
> > tried compiling it with clang:
> > clang++ test.cpp -o test -lm
> > test.cpp:7:17: error: use of undeclared identifier 'expf10'
> > return ((int*)(&expf10))[argc];
> >                 ^
> > 1 error generated.
> >
> > tried with gcc:
> > gcc test.cpp -o test -lm
> > test.cpp: In function 'int main(int, char**)':
> > test.cpp:7:17: error: 'expf10' was not declared in this scope
> >  return ((int*)(&expf10))[argc];
> >
> > Does FreeBSD math.h have expf10 and if so, how do I link against it?
>
> It's not in the C standard (C99 or C11). So why would it be available?
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