MISRA 2004 Rule 10.5: Shift left of signed quantity

Used to allow shifting of signed expressions, e.g., "a << 1".

  EWL_C/src/strtold.c Line: 863
  EWL_C/src/strtold.c Line: 889
  EWL_C/src/wcstold.c Line: 802
  EWL_C/src/wcstold.c Line: 828