fabs(x) vs. (x) < 0 ? -(x) : (x)

[gwyn at brl-smoke.UUCP]

In article <645 at mcgill-vision.UUCP> mouse at mcgill-vision.UUCP (der Mouse) writes:
>I would really like a C compiler that produces anything that could
>*touch* the "Kahan's magic square root" code of the 4.3 VAX libm.

The UNIX System V Release 2.0 sqrt routine, written in C, runs about
half as fast as the 4.3BSD assembly code, and is about twice as accurate.

Just for information..