[previous] 4405 [next] An expression of 'essentially Boolean' type (%1s) is being converted to floating type, '%2s' on assignment.
Arithmetic type - Assignment

This message is issued whenever an expression of essentially Boolean type undergoes an assigning conversion to a floating type.

For example: 


/*PRQA S 1-9999 ++*/
/*PRQA S 4405 --*/

void foo (float b);

float f4405 (int a)
{
  float fta = (a != 0);     /* 4405 */

  foo (a < 0);              /* 4405 */

  fta = (a < 0);            /* 4405 */

  return (a == 0);          /* 4405 */
}

QA·C Source Code Analyser 8.1.2
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