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Implicitly undefined REFERENCE - ISO:C90-6.3.4 Cast Operators - Semantics

A cast has been performed from a pointer to function type to a floating type ( or vice versa ). This is meaningless.

For example: 


/*PRQA S 2017,2211,3199,3203,3227,3408,3672,3673 ++*/

extern void foo(float fta, int (*pfa)(void))
{
    float ftb;
    int (* pfb)(void);

    ftb = (float)pfa;                   /* Message 0302 */
    pfb = (int (*)(void))fta;           /* Message 0302 */
}

MISRA C:2012 Rules applicable to message 0302:

Rule-1.3  (Required) There shall be no occurrence of undefined or critical unspecified behaviour
Rule-11.1  (Required) Conversions shall not be performed between a pointer to a function and any other type

QA·C Source Code Analyser 8.1
MISRA C:2012 Compliance Module 1.0
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