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Arithmetic type - Implicit conversions

An expression of type double is being implicitly converted to type signed long. A conversion of this kind may result in a loss of precision as the fractional element of the value is discarded. If the integral element of the value cannot be represented in type signed long, the result will be meaningless.

For example: 


/*PRQA S 2017,3199,3203,3408,3447,3602 ++*/

extern double dbx;
extern void ef(signed long p);

extern void foo(void)
{
    signed long sla;

    sla = dbx;                  /* Message 3817 */

    ef(dbx);                    /* Message 3817 */
}

See also:

QA·C Source Code Analyser 8.1.2
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