[previous] 3342 [next] Controlling expression of 'for' loop is a floating point comparison.
Control flow

The controlling expression of a for loop (the second expression) is usually a relational or equality operation - for example, testing the value of a loop control variable. Message 3342 is generated when this expression contains any operations involving floating point operands.

For example: 


/*PRQA S 2017,3121,3132,3227,3408,3447 ++*/

extern float ftbuf[100];

extern void foo(float ftx, float fty)
{
  float ft;
  int   i;

  for (i = 0; ftbuf[i] > 0.0F; ++i)                   /* Message 3342 */
  {
    /* ... */
  }

  for (ft = 0.0F; ft < ftx; ft = ft + fty)            /* Message 3342 and 3340 */
  {
    /* ... */
  }
}

MISRA-C:2004 Rules applicable to message 3342:

Rule  13.4  (Required) The controlling expression of a for statement shall not contain any objects of floating type.

QA·C Source Code Analyser 8.1
MISRA-C:2004 Compliance Module 3.2
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