Library /sys$common/syshlp/helplib.hlb  —  CRTL  ilogb
    Returns the exponent part of its argument.

    This function is OpenVMS Alpha and Integrity servers only.

    Format

      #include  <math.h>

      int ilogb  (double x);

      int ilogbf  (float x);

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