ilogb man page on HP-UX

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ilogb(3M)							     ilogb(3M)

       ilogb(),	 ilogbf(),  ilogbl(),  ilogbw(),  ilogbq() - radix-independent
       exponent functions

   Integrity Server Only
       The function computes the exponent of the floating point value x.  For‐
       mally,  the return value is the integral part of log base r of |x| as a
       signed integral value, for nonzero x, where  r  is  the	radix  of  the
       machine's  floating-point  arithmetic.	The radix r is 2 on HP-UX sys‐

       If x is denormal it is treated as though it were normalized before  the
       exponent is determined.

       Note: is equivalent to for all values of x

   Integrity Servers Only
       is a version of it takes a argument.

       is a version of it takes a argument.

       is an version of it takes an argument.

       is equivalent to on HP-UX systems.

       To  use these functions, compile either with the default option or with
       the and options.

       To use (for Integrity servers) or compile also with the option.

       Make sure your program includes Link in the math library by  specifying
       on the compiler or linker command line.

       For more information, see the at the following site:

       If x is NaN, returns

       If x returns

       If x is zero, returns

   Integrity Servers Only
       If  x  is  NaN,	+-INFINITY,  or	 zero, then the invalid floating-point
       exception is raised (as specified by C99 TC2)

       The macros and are defined in

       No errors are defined.

       frexp(3M), logb(3M), scalb(3M), scalbn(3M), scalbln(3M), math(5).

       : XPG4.2, ISO/IEC C99 (including Annex  F,  "IEC	 60559	floating-point

       :  ISO/IEC  C99	(including  Annex  F, "IEC 60559 floating-point arith‐


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