Hi,
I've got a build of odff05 now and want to continue work. I need expm1
and log1p (issue 91602). I can put the following code into
sal\inc\rtl\math.hxx, so I can use the functions with ::rtl::math::expm1
and ::rtl::math::log1p in interpr*.cxx
Is it necessary to have a solution, which switches, dependent on the
compiler? If yes, how can I do it?
kind regards
Regina
/** The MSVC compilers do not provide expm1 and log1p. The following
functions are an ersatz for them.
*/
inline double expm1(double x)
{
double u = exp(x);
if (u == 1.0)
return x;
if (u-1. == -1.0)
return -1.0;
return (u-1.0)*x/log(u);
}
inline double log1p(double fX)
{
double fU = 1.0+fX;
if (fU == 1.0)
return fX;
else
return log(fU)*fX/(fU-1.0);
}
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