bug in fcode

[Dirk Van Essendelft]

I'm writing some code to produce some fortran and c compilable math expressions and I notices a strange thing:

if I do:

x = symbols("x")

exp(Min(2,x))

I get 'exp(Min(2,x))'

as I would expect, but if I do

fcode(exp(Min(2,x)))

I get: 'exp(Min(1.0d0, x))'

which is obviously not the right expression

If I do

ccode(exp(Min(2,x)))

I get: 'exp(Min(2,x))'

which seems correct

[Ondřej Čertík]

On Mon, Apr 20, 2015 at 1:35 PM, Dirk Van Essendelft
<dirkt...@gmail.com> wrote:
> I'm writing some code to produce some fortran and c compilable math
> expressions and I notices a strange thing:
>
> if I do:
>
> x = symbols("x")
>
> exp(Min(2,x))
>
> I get 'exp(Min(2,x))'
>
> as I would expect, but if I do
>
> fcode(exp(Min(2,x)))
>
> I get: 'exp(Min(1.0d0, x))'

This is what I get with the sympy d8b78b4625897da73dd5ae764f45adf0803747b2:

In [1]: fcode(exp(Min(2,x)))
Out[1]: ' exp(Min(2.0d0, x))'

and with sympy-0.7.5 I get:

In [1]: fcode(exp(Min(2,x)))
Out[1]: ' exp(Min(1.0d0, x))'

a quick git bisect reveals it got fixed by
https://github.com/sympy/sympy/commit/56fe9a9e3ae9c449fdbbd4332ba87bfbbd6b84a3

Ondrej

>
> which is obviously not the right expression
>
> If I do
>
> ccode(exp(Min(2,x)))
>
> I get: 'exp(Min(2,x))'
>
> which seems correct
>

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