Hi,

It's entirely possible I'm using ccode wrong, but I can't seem to get it to 
recognize my custom replacements for sqrt, fabs, or pow.  Here's a simple 
test case:

#!/usr/bin/env python
> from sympy import *
>
 

print ccode(sympify('sqrt(x)'), user_functions={"sqrt": "std::sqrt"})
> print ccode(sympify('Abs(x)'), user_functions={"fabs": "std::abs"})
> print ccode(sympify('x**2'), user_functions={"pow": "std::pow"})


On my system, this prints:

sqrt(x)
> fabs(x)
> pow(x, 2)


I can of course work around this pretty easily with text replacement, so 
it's not a big deal...

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