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Altera_Forum
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16 years ago

Error 10511 - Arctan

Hello, I have receive the message --- Quote Start --- Error (10511): VHDL Qualified Expression error at main.vhd(37): ARCTAN type specified in Qualified Expression must match inte...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Agree with FvM. arctan returns real results, but reals are non-synthesizable constructs in FPGAs. One way is to recast the result back to a synthesizable type, such as integer. 

variable x:real;
q:=integer(arctan(x));