TypeConversions from FP16 to FP

[mnfisher]

Will have a play - over the weekend.

The App developer - the use supplementary code option doesn't seem to work so can't use the previous code...

It's odd that some values are different too (1/3 for example)

Martin

[Steve-Matrix]

PC Developer doesn't use C code and so cannot use any supplementary code.

[mnfisher]

PC Developer doesn't use C code and so cannot use any supplementary code.

- There is a (disabled) check box in the build options. Maybe coming soon (and which language )

Is it possible to call an external program?

The issue with the conversion seems to be with the high order bit of the exponent - so 1 works (00x3C00) but 2 doesn't (0x4000). I'd found some other code as well - but this mornings 'googlings' aren't working so well


Martin

[Steve-Matrix]

Is it possible to call an external program?

There is an Inbuilt Function to call external DLLs which can be used in PC Developer.

[mnfisher]

Okay - an app version....

I cheated (?) - I asked ChatGPT to do fp16 to fp32 in C and converted the result.

I also cheated in that I just return 0.0 for NaN, and Infinity.

But it seems to work AOK - I just used simulation to step through it and checked the value of '.r'

Martin

[stefan.erni]

Hi Martin, Hi Steve

I have added Martin's macro to my program. It works perfectly in the App. Very good, thank you Martin.
App:

FP16_to_dez_App_post1.fcsx

(90.91 KiB) Downloaded 195 times

Result:

[mnfisher]

Cool!

Should be easy to look up the bit patterns for NaN and +/- infinity and add those too for completion.

Martin