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Altera_Forum
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16 years ago

How to write floating-point value to custom logic???

Hi all, I worte a component which is using altfp_sqrt of megafunction, then I checked the simulation with avalon interface signal, it's match the timing and need 17 cycles. All configurations are ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Hello,

You can use a function to copy hexadecimal values using the address like that : 


unsigned long F32ToHex (float valueF)
{
    unsigned long* valueL = (unsigned long*) &valueF;
    return *valueL;
}
And you call it as following : 


float value = 678.482;
unsigned long hexValue;
hexValue = F32ToHex(value);
IOWR(SQRT_BASE, 0, hexValue);
Jérôme