Detailed Information - Comparing Boolean Values

INCA writes Boolean values dependent on the option either as text (true/false) or as number (1/0). A comparison must respect this.

Hint:

• DCM V1 always writes 0/1 as only numbers and not text are supported.

If datasets (with A2L description) are compared, the type (Boolean) can be detected by a bitmask that masks exactly one bit.

INCA detects equality if source and destination both have Boolean type and

• same value
• 1 and true
• 0 and false

If file-based data is compared, the type cannot be detected unambiguously:

• true/false can be

  • Boolean
  • text list (enum)

• 1/0 can be

  • Boolean
  • numeric

Therefore only values of the same category can be compared.

INCA detects equality if source and destination both have Boolean type and the same value. A comparison of mixed mode (1/0 and true/false) always results in 'not equal'.

If a dataset is compared with a file, INCA knows the type of the dataset but not of the file.

INCA detects equality if the dataset has Boolean type and the file uses true/false.