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The C99 standard defines ldexp(double a, int exp) as a × 2exp and scalbn(double a, int exp) as a × FLT_RADIXexp
What’s the difference between the two if I’m using IEEE-754 arithmetic (i.e. FLT_RADIX == 2)?
Appendix F:
F.9.3.6 The ldexp functions [#1] On a binary system, ldexp(x, exp) is equivalent to scalbn(x, exp)