ilogbd64(3M) ilogbd64(3M)[top]NAMEilogbd64(), ilogbd128(), ilogbd32() - decimal exponent functionsSYNOPSISDESCRIPTIONThe function computes the exponent of the floating point value x. For‐ mally, the return value is the integral part of log base 10 of |x| as a signed integer value, for nonzero x. If x is subnormal, it is treated as though it were normalized, before the exponent is determined. is equivalent to for all values of x is a version of it takes a argument. is a version of it takes a argument. These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward.USAGETo 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 VALUEIf x returns and raises the invalid floating-point exception. If x is zero, returns and raises the invalid floating-point exception. If x is NaN, returns and raises the invalid floating-point exception.ERRORSIf x is NaN, sets to If x is zero or infinite, sets toSEE ALSOfrexpd64(3M), logbd64(3M), scalbnd64(3M), scalblnd64(3M), math(5).STANDARDS CONFORMANCEThese functions conform to ISO/IEC TR 24732, "Extension for the pro‐ gramming language C to support decimal floating-point arithmetic". HP Integrity Server Only ilogbd64(3M)

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