hpux man page for log2d128

log2d64(3M)															       log2d64(3M)

NAME
       log2d64(), log2d128(), log2d32() - decimal base-2 logarithm functions

SYNOPSIS
DESCRIPTION
       returns the base-2 logarithm of x.

       is a version of it takes a argument and returns a result.

       is a version of it takes a argument and returns a result.

       These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward.

USAGE
       To use any of these functions, compile with the option.

       Make sure your program defines and then includes

       Link in the math library by specifying or on the linking command line.

       For more information, see the at the following site:

RETURN VALUE
       If x is +infinity, returns +infinity.

       If x is 0, returns -infinity and raises the divide-by-zero exception.

       If x is less than 0, returns NaN and raises the invalid exception.

       If x is NaN, returns NaN.

       raises the inexact exception whenever a rounded result does not equal the mathematical result.

ERRORS
       If x is less than 0, sets to

       If x is 0, sets to

SEE ALSO
       exp2d64(3M), log10d64(3M), log1pd64(3M), logd64(3M), math(5).

STANDARDS CONFORMANCE
       These functions conform to ISO/IEC TR 24732, "Extension for the programming language C to support decimal floating-point arithmetic".

							     HP Integrity Server Only						       log2d64(3M)