‘np.ldexp’ exists mainly for compatibility with the C/C++ functions ldexp,
ldexpf, ldexpl, which are defined for float/double/long double.
Quoting the C refs:
> On binary systems (where FLT_RADIX is 2), ldexp is equivalent to scalbn.
> The function ldexp ("load exponent"), together with its dual, frexp, can be
> used to manipulate the representation of a floating-point number without
> direct bit manipulations.
> On many implementations, ldexp is less efficient than multiplication or
> division by a power of two using arithmetic operators.
So in general I do not think that extending ‘np.ldexp’ to complex makes much
sense, since it would be peculiar to numpy implementation and destroy the C/C++
equivalence.
Stefano
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