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Altera_Forum
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14 years ago

NIOS2 HW & DIV Instructions + FPU

Hello i am in charge of designing a system that does a lot of complex sin/cos/* instructions and i need them to be fast. I am using NIOS2-F at 100mhz in a Cyclone IV. I've enabled HW and DIV ...
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Altera_Forum
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14 years ago

Presumably there is a separate compiler option than can be turned back off? (without doing a compiler rebuild).

Even if that does mean you have to explicitly mark constants as 'float'.

You might also need to set another option to let the compiler do certain FP arithmetic itself - instead of generating code to do it. The issue here is that the compiler might not generate exactly the same bit-pattern as the target.