[comp.lang.c] need 64-bit arithmetic routines

psm@manta.NOSC.MIL (Scot Mcintosh) (08/30/89)

Can anyone point me to a set of C routines that do add, subtract,
multiply, and divide on 64-bit quantities? I don't need the 
full-blown capabilities of something like the arbitrary-precision
math package on SIMTEL20.  Thanks.
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Scot McIntosh   Internet: psm@helios.nosc.mil
		Usenet:   lord only knows