Bruno Wolff III wrote:
On Tue, Sep 04, 2007 at 17:32:45 -0700,
Les <hlhowell@xxxxxxxxxxx> wrote:
The same is true of Floating point operations vs integers. When floats
had to be calculated by loops with an integer processor, they were
expensive and integers were faster. Now with high speed floating point
units, simple float operations are quite fast if done in line. Ditto
On some models of crays the floating point units were faster than the
integer units. I don't remember if that was because interger operations
may not have been vectorizable or if there was some other reason for it.
Some models of CRAYS had no fixed point instructions at all.
Today, the 486 and later machines in the Intel architecture
are FASTER at floating point than with integers.
The best way to get the speed this fellow is looking for is
to ensure that the fp hardware is actually being used.
Mike
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