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Altera_Forum
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14 years ago

GCC and FPU

Hello everyone, I am porting some legacy code which uses double precision floating point. Changing double to single fp or fixed point would require a major rewrite which I want to avoid. ...
Altera_Forum's avatar
Altera_Forum
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14 years ago

Possibly adding a single FP accumulator would be enough - but more regs probably doesn't add much fpga real estate.

Thinking.... If you don't try to read back part of the result during the second instruction (of the current 3), then the operation can be asynchronous.

Not exactly sure how to resync, but gcc will have support for async FP ops.

Writing an FP unit is probably a project in itself :-)