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[Frama-c-discuss] using mathematical modulo in acsl specification

  • Subject: [Frama-c-discuss] using mathematical modulo in acsl specification
  • From: stephane.duprat at atos.net (DUPRAT Stephane)
  • Date: Thu, 29 Nov 2012 21:50:43 +0000
Hello,

As mentioned in ACSL Doc for Oxygen ?2.2.4, the % operator of ACSL is mapped to the modulo semantic of the ANSI_C that differs from the mathematical modulo.
The modulo operation originating from source code and acsl are both traduced by computer_mod in proof obligations.

First question is how to use mathematical modulo in ACSL specification if it is possible ?

Secondly, is there a gateway between computer_mod and the mathematical modulo (for a%b if a>0 and b<>0) that could allow to use the % operator for modulo of Alt-Ergo in po generated !

Thanks in advance,

St?phane

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