logbd64(3M)															       logbd64(3M)

NAME

       logbd64(), logbd128(), logbd32() - decimal exponent functions

SYNOPSIS

DESCRIPTION

       The function computes the exponent of the floating point value x.  Formally, the return value is the integral part of log base 10 of |x| as
       a signed floating point value, for nonzero x.

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

       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 returns +infinity.

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

       If x is NaN, returns NaN.

ERRORS

       If x is 0, sets to

SEE ALSO

       frexpd64(3M), ilogbd64(3M), scalbnd64(3M), scalblnd64(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						       logbd64(3M)