Pascal (unit) dB SPL, or 20 µPa. The airtightness of buildings is measured at 50 Pa. The units of atmospheric pressure commonly used in meteorology were formerly the bar, which was close to the average air pressure on Earth, and the millibar. Since the introduction of SI units, meteorologists generally measure pressures in hectopascals (hPa) unit, equal to 100 pascals or 1 millibar. Exceptions include Canada, which use kilopascals (kPa). In many other fields of science, the SI is preferred, which means Pa with a prefix (in multiples of 1000) is preferred. Many countries also use the millibars. In practically all other
Comparison of Pascal and C in modern Pascal as well). Example; Pascal: Status := Status + [StickyFlag]; Status := Status - [StickyFlag]; if (StickyFlag in Status) then ... or Pascal: Status := Status or StickyFlag; Status := Status and not StickyFlag; if StickyFlag and Status = StickyFlag then ... C: Status |= StickyFlag; Status &= ~StickyFlag; if (Status & StickyFlag) { ... Although bit operations on integers and operations on sets can be considered similar if the sets are implemented using bits, there is no direct parallel between their uses unless a non-standard conversion between integers and sets is possible. During expression evaluation, and in