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# [Frama-c-discuss] A problem with math functions

• Subject: [Frama-c-discuss] A problem with math functions
• From: prasuna.drdo at gmail.com (Prasuna Saka)
• Date: Mon, 11 Jul 2016 11:26:24 +0530

Hi,

I am trying to solve a simple problem having math function "cos". In the
annotations, I have used the built-in function \cos. However, when run with
WP plug-in using the Frama-C Neon Version, following error is thrown :

[wp} user error: Builtin \cos(real) not defined
[wp] failure: Logic \cos undefined.

Please let em know the reason for the above errors. How do I make the
built-in function available at run-time.

Thanks & Regards,

Prasuna
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