Convert "a" to a normalized fraction in the range \[1,2\) times a power of
two, and return the exponent value as an integer. This is equivalent to
lrint(floor(log2(fabs(a)))) but it is computed more efficiently. Returns
the constants documented in the man page for zero, infinity, or NaN.
Convert "a" to a normalized fraction in the range \[1,2\) times a power of two, and return the exponent value as an integer. This is equivalent to lrint(floor(log2(fabs(a)))) but it is computed more efficiently. Returns the constants documented in the man page for zero, infinity, or NaN.