12.6.11 Exponentials and logarithms

Unsafe Operation: $flcbrt fl

Return the real cube root function of fl.

Unsafe Operation: $flexp fl

Return the base e exponential of the operand.

Unsafe Operation: $fllog fl

Unsafe Operation: $fllog fl1 fl2

When applied to one argument: return the natural logarithm of the operand. For non–negative fl the return value is a numeric flonum; for negative fl the return value is not–a–number. See also $log-flonum to compute the logarithm of negative flonums as a complex number.

When applied to two arguments: return the base–fl2 logarithm of fl1.

Unsafe Operation: $fllog2 fl1 fl2

Return the base–fl2 logarithm of fl1.

Unsafe Operation: $flexpm1 fl

Return an equivalent of exp(fl) - 1.

Unsafe Operation: $fllog1p fl

Return an equivalent of log(1 + fl).

Unsafe Operation: $flhypot fl1 fl2

Compute the Euclidean distance function: \sqrt(X*X+Y*Y). (libc)hypot.