Reference

erfcf(3) on FreeBSD

The text 3b81c0a55922, as FreeBSD 2.2.8-RELEASE, FreeBSD 2.2.7-RELEASE, FreeBSD 2.2.6-RELEASE, FreeBSD 2.2.5-RELEASE, FreeBSD 2.2.2-RELEASE shipped it.

error function operators

erfcf(3) on FreeBSD now