Reference

erfcf(3) on FreeBSD

The text 98051875baa9, as FreeBSD 6.2-RELEASE, FreeBSD 6.1-RELEASE, FreeBSD 6.0-RELEASE, FreeBSD 5.5-RELEASE, FreeBSD 5.4-RELEASE, FreeBSD 5.3-RELEASE shipped it.

error function operators

erfcf(3) on FreeBSD now