SetCalc

The builtin Common Command Set contains only one command to perform mathematical calculations. The "SET /A" command can work directly with whole numbers from
-2,147,483,647 up to +2,147,483,647.

This allows for a wide variety of functions using some creative offsets. The table below shows a few of the calculations that are within the numeric range of the builtin command. When performing any calculation, any fractional component is dropped from the result. This has the effect of always rounding DOWN to the nearest whole integer.

In each row, starting with the value in green, you can successfully calculate any of the values to it's right in that row using only SET /A commands at the command line or in a script.

	Nanoseconds (Billionths)	Microseconds (Millionths)	Milliseconds (Thousandths)	Centiseconds (Hundredths)	Deciseconds (Tenths)	Seconds	Minutes	Hours
TIME	Seconds	Minutes	Hours	Days	Weeks	Months	Years	Decades
	2,147,483,647	35,791,394	596,523	24,855	3,550	814	67	6
		2,147,483,647	35,791,394	1,491,308	213,044	49,029	4,085	408
			2,147,483,647	89,478	12,782	2,940	245	24
				2,147,483,647	306,783,378	70,602,202	5,883,516	588,351
	2,147,483,647	2,147,483	2,147	214	2
		2,147,483,647	2,147,483	2,147	214	2
			2,147,483,647	214,748,364	21,474,836	2,147,483	35,791	596
				2,147,483,647	214,748,364	21,474,836	357,913	5,965
					2,147,483,647	214,748,364	3,579,139	59,652
SIZE	Bits	Bytes	Kilobytes	Megabytes	Millions of Bytes	Gigabytes	GB (1000MB)	Terabytes
	2,147,483,647	268,435,455	262,143	255	268	0	0	0
		2,147,483,647	2,097,151	2,047	2,147	1	2	0
			2,147,483,647	2,097,151	2,199,023	2,047	2,097	1
				2,147,483,647		2,097,151	2,147,483	2,047
					2,147,483,647	1,999,999	2,047,999	1,953
DISTANCE (US)	1/16 Inch	1/8 Inch	1/4 Inch	1/2 Inch	Inches	Feet	Yards	Miles
	2,147,483,647	1,073,741,823	536,870,911	268,435,455	134,217,727	11,184,810	3,728,270	2,118
		2,147,483,647	1,073,741,823	536,870,911	268,435,455	22,369,621	7,456,540	4,236
			2,147,483,647	1,073,741,823	536,870,911	44,739,242	14,913,080	8,473
				2,147,483,647	1,073,741,823	89,478,485	29,826,161	16,946
					2,147,483,647	178,956,970	59,652,323	33,893
						2,147,483,647	715,827,882	406,720
DISTANCE (Metric)	Picometers	Nanometers	Micrometers	Millimeters	Centimeters	Meters	Kilometers	Nautical Miles
	2,147,483,647	2,147,483	2,147	2
		2,147,483,647	2,147,483	2,147	214	2
			2,147,483,647	2,147,483	214,748	2,147	2	1
				2,147,483,647	214,748,364	2,147,483	2,147	1,159
					2,147,483,647	21,474,836	21,474	11,595
						2,147,483,647	2,147,483	1,159,548
MONEY (US)	Pennies	Nickels	Dimes	Quarters	Dollars	$1000	$1M	$1B
	2,147,483,647	429,496,729	214,748,364	85,899,345	21,474,836	21,474	21	2
	Dollars	$Hundreds	$Thousands	$Millions	$Billions	$Trillions	$Quadrillions
	2,147,483,647	21,474,836	2,147,483	2,147	2
		2,147,483,647	214,748,364	214,748	214
			2,147,483,647	2,147,483	2,147	2
				2,147,483,647	2,147,483	2,147	2

For a practical example of using offsets to your advantage, see the .GetFreeM and .GetDirSizeM commands. The M stands for Millions of bytes (1,000,000 - not 1,048,576). This allows us to process directory sizes and free space up to over 2,000 TB in a shell script using only native commands and utilities.

!SetCalc

Description

Contents

Related .Mount/\Commands, #Constants, $Functions, :Procedures