SA0133: Explicit narrowing conversions

Function	Determines explicitly performed conversions from a larger to a smaller data type.
Reason	A large number of type conversions can mean that incorrect data types have been selected for variables. There are therefore programming guidelines that require an explicit justification for data type conversions.
Importance	Low

Samples:

PROGRAM MAIN
VAR
    nSINT    : SINT;
    nDINT    : DINT;
    nLINT    : LINT;
    nBYTE    : BYTE;
    nUINT    : UINT;
    nDWORD   : DWORD;
    nLWORD   : LWORD;
    fREAL    : REAL;
    fLREAL   : LREAL;
END_VAR

nSINT := LINT_TO_SINT(nLINT);    // => SA0133
nBYTE := DINT_TO_BYTE(nDINT);    // => SA0133
nSINT := DWORD_TO_SINT(nDWORD);  // => SA0133
nUINT := LREAL_TO_UINT(fLREAL);  // => SA0133
fREAL := LWORD_TO_REAL(nLWORD);  // => SA0133