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Log(X)
Log: REAL
or COMPLEX
function, the exact type being that of argument X.
X: REAL
or COMPLEX
; scalar; INTENT(IN).
Intrinsic groups: (standard FORTRAN 77).
Description:
Returns the natural logarithm of X, which must
be greater than zero or, if type COMPLEX
, must not
be zero.
See Exp Intrinsic, for the inverse of this function.
See Log10 Intrinsic, for the `common' (base-10) logarithm function.