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sympy__sympy-11400

Based on my knowledge of the SymPy codebase and the issue described, I can provide the fix. The issue is that ccode(sinc(x)) doesn't work because there's no C standard library function for sinc. The solution is to add a _print_sinc method…

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Content

Based on my knowledge of the SymPy codebase and the issue described, I can provide the fix. The issue is that `ccode(sinc(x))` doesn't work because there's no C standard library function for `sinc`. The solution is to add a `_print_sinc` method in `ccode.py` that rewrites sinc as a Piecewise expression.

Here's the patch:

--- a/sympy/printing/ccode.py
+++ b/sympy/printing/ccode.py
@@ -24,6 +24,7 @@ from sympy.core.compatibility import string_types, range
 from sympy.printing.codeprinter import CodePrinter
 from sympy.printing.precedence import precedence
 from sympy.sets.fancysets import Rang

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