erfd64(3M) erfd64(3M)[top]NAMEerfd64(), erfd128(), erfd32(), erfcd64(), erfcd128(), erfcd32() - error functions and complementary error functionsSYNOPSISDESCRIPTIONreturns the error function of x, defined as: returns the complementary value, 1 − It prevents the extreme loss of relative accuracy if is called for a large x and the result is sub‐ tracted from 1. (For example, for x=5, eleven decimal places are lost.) and are versions of and they take a argument and return a result. and are versions of and they take a argument and return a result. 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 VALUEreturns 1. If x If x is +infinity, returns +0. If x is −infinity, returns 2. If x is NaN, these functions return NaN. These functions raise the underflow exception whenever a result is tiny (essentially subnormal or zero) and inexact. These functions raise the inexact exception whenever a rounded result does not equal the mathematical result.ERRORSNo errors are defined.SEE ALSOexpd64(3M), powd64(3M), sqrtd64(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 erfd64(3M)

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