— Function: double gsl_log1p (const double x)

This function computes the value of \log(1+x) in a way that is accurate for small x. It provides an alternative to the BSD math function log1p(x).

— Function: double gsl_expm1 (const double x)

This function computes the value of \exp(x)-1 in a way that is accurate for small x. It provides an alternative to the BSD math function expm1(x).

— Function: double gsl_hypot (const double x, const double y)

This function computes the value of \sqrt{x^2 + y^2} in a way that avoids overflow. It provides an alternative to the BSD math function hypot(x,y).

— Function: double gsl_hypot3 (const double x, const double y, const double z)

This function computes the value of \sqrt{x^2 + y^2 + z^2} in a way that avoids overflow.

— Function: double gsl_acosh (const double x)

This function computes the value of \arccosh(x). It provides an alternative to the standard math function acosh(x).

— Function: double gsl_asinh (const double x)

This function computes the value of \arcsinh(x). It provides an alternative to the standard math function asinh(x).

— Function: double gsl_atanh (const double x)

This function computes the value of \arctanh(x). It provides an alternative to the standard math function atanh(x).

— Function: double gsl_ldexp (double x, int e)

This function computes the value of x * 2^e. It provides an alternative to the standard math function ldexp(x,e).

— Function: double gsl_frexp (double x, int * e)

This function splits the number x into its normalized fraction f and exponent e, such that x = f * 2^e and 0.5 <= f < 1. The function returns f and stores the exponent in e. If x is zero, both f and e are set to zero. This function provides an alternative to the standard math function frexp(x, e).