Error handling requirements of inlining code.

[Doug Gwyn]

In article <20708 at sequent.UUCP> paulr at sequent.UUCP (Paul Reger) writes:
-For example, say the code:
-#include <math.h>
-    double x;
-    x = sqrt(-1.0);
-is given the compiler, and it decides to inline sqrt().  Would the
-standard require the compiler to also provide error handling of sqrt()
-according to the standard library ???

The in-line code doesn't have to agree with the library, but it does
have to conform to the Standard.  On a domain error (as in your example),
EDOM must be stored in errno, and the function returns an implementation-
defined value (which may be a NaN, for example).  An exception must not
be raised.