Honored ContributorHello,
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 integer type that is implied for expression by context --- Quote End --- I'd like to known what type of integer to give it. Thank.
Honored ContributorRight click on the message and click "Help". What does it tell you?
JakeHonored ContributorWhen I click "HELP", I receive
--- Quote Start --- Change the type you specify for an expression to be the same as the implied expression type, or change the context in which the expression occurs so the implied expression type is the same as the type you specify. --- Quote End ---Honored ContributorYou should possibly mention, where the ARCTAN typed definitions comes from. With standard libraries, I'm only aware of the ARCTAN function in IEEE.MATH_REAL, which has a real type argument and result.
Honored ContributorAgree 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));
