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Altera_Forum
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10 years ago

Trigonometric functions with FPU

Hello, I'm trying to reduce the latency of my arithmetic operations. For that purpose i The CUSTOM FPU INSTRUCTION to my Nios. I've enabled HW and DIV at NIOS2-F. Using this Custom Instructi...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

I would suggest to you to try to invoke the function directly in your C code.

In your C:

# include "system.h"

then in your main:

result_cos = ALT_CI_CI_FP_COSINE_0(a);

Reason is that I have a feeling that the compiler is unable to map the new operations to the newlib. You could try to recompile newlib, rebuild BSP folder.