A tale of two C's.

[Doug Gwyn]

In article <924 at cresswell.quintus.UUCP> ok at quintus.UUCP (Richard A. O'Keefe) writes:
>It's worth noting that exactly this technique is an offical part of the
>System V library interface (see 'matherr').

matherr() was intended to be replaced by user code (and so documented)
as a deliberate aspect of its design.  None of the other library routines
is obliged to support such perversion.