Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: have a look at this proggie, please. | Date | 20 Nov 1998 01:32:54 GMT |
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Followup to: <Pine.GSO.4.05.9811191517550.4315-100000@montezuma.acc.umu.se> By author: David Weinehall <tao@acc.umu.se> In newsgroup: linux.dev.kernel > > > > Why the surprise? You've generated an exception #0, which Intel > > called "divide by zero" in early IA processor manuals, but now call > > "divide error". It is raised by any divide where the result overflows. > > That's NOT an divide by zero... > > Output: > > -2147483648 * -1 = -2147483648 > Floating exception > ^^^^^^^^^^^^^^^^^^ > > Quite obviously, -MAXINT-1 * -1 is too large for an integer to hold (by > one), but it should *NOT* report a floating exception... Right?! >
No. SIGFPE is the reported exception for integer division overflow or division by zero. Illogical, perhaps, but that's the way it is.
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