matherr -- pANSand OCS

[daver at hcx2.SSD.HARRIS.COM]

The pANS explains that the committee chose not to adopt System V's 'matherr'
capability, and 'matherr' is not a reserved identifier.

The 88open Trial Use OCS (3/10/89) lists 'matherr' as a service residing in 
libm (see section 7.4).

Can an implementation, then, be both ANSI C and 88k OCS compliant in this 
regard?  Or can both "standards" be satisfied by having a routine such as
'__matherr'?