Error function

Error functions

Error functions as per the Gnu Scientific Library, reference manual section 7.15 and AMS-55, chapter 7. Thes functions are declared in header file gsl_sf_error.h

erf(x, mode=0, give=FALSE, strict=TRUE)
erfc(x, mode=0, give=FALSE, strict=TRUE)
log_erfc(x, mode=0, give=FALSE, strict=TRUE)
erf_Q(x, mode=0, give=FALSE, strict=TRUE)
hazard(x, mode=0, give=FALSE, strict=TRUE)

Arguments

• x: input: real values

• give: Boolean with TRUE meaning to return a list of three items: the value, an estimate of the error, and a status number

• mode: input: mode. For GSL_PREC_DOUBLE , GSL_PREC_SINGLE, GSL_PREC_APPROX use 0,1,2

  respectively

• strict: Boolean, with TRUE meaning to return NaN

  if status is an error

Details

The zero functions return a status of GSL_EDOM and a value of NA for $n\leq 0$

References

https://www.gnu.org/software/gsl/

Author(s)

Robin K. S. Hankin

Examples

erf(0.745) # Example 1, page 304