erfd64(3M)erfd64(3M)NAMEerfd64(), erfd128(), erfd32(), erfcd64(), erfcd128(), erfcd32() - error
functions and complementary error functions
SYNOPSISDESCRIPTION
returns 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.
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
returns 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.
ERRORS
No errors are defined.
SEE ALSOexpd64(3M), powd64(3M), sqrtd64(3M), math(5).
STANDARDS CONFORMANCE
These 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)