Library /sys$common/syshlp/helplib.hlb  —  CRTL  logb
    Returns the radix-independent exponent of the argument.

    This function is supported on OpenVMS Integrity servers and
    Alpha only.

    Format

      #include  <math.h>

      double logb  (double x);

      float logbf  (float x);

      long double logbl  (long double x);
Additional Information: explode extract
Argument Description Return Values
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