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// -*-C++-*-
#ifndef MATHFUNCS_ASINH_H
#define MATHFUNCS_ASINH_H
#include "mathfuncs_base.h"
#include <cassert>
#include <cmath>
namespace vecmathlib {
template<typename realvec_t>
realvec_t mathfuncs<realvec_t>::vml_acosh(realvec_t x)
{
return log(x + sqrt(x*x - RV(1.0)));
}
template<typename realvec_t>
realvec_t mathfuncs<realvec_t>::vml_asinh(realvec_t x)
{
// Reduce range
realvec_t r = fabs(x);
r = log(r + sqrt(r*r + RV(1.0)));
r = copysign(r, x);
return r;
}
template<typename realvec_t>
realvec_t mathfuncs<realvec_t>::vml_atanh(realvec_t x)
{
// Reduce range
realvec_t r = fabs(x);
r = RV(0.5) * log((RV(1.0) + r) / (RV(1.0) - r));
r = copysign(r, x);
return r;
}
}; // namespace vecmathlib
#endif // #ifndef MATHFUNCS_ASINH_H
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