$NCONVERT
Synopsis
$NCONVERT(n,format,endian) $NC(n,format,endian)
Parameters
n  Any number, which can be specified as a value, a variable, or an expression. Additional limitations on valid values are imposed by the format selected. 
format  One of the following format codes, specified as a quoted string: S1, S2, S4, S8, U1, U2, U4, F4, or F8. 
endian  Optional — A boolean value, where 0 = littleendian and 1 = bigendian. The default is 0. 
Description
$NCONVERT uses the specified format to convert the number n to an encoded string of 8bit characters. The values of these characters are in the range $CHAR(0) through $CHAR(255).
The following are the supported format codes:
S1  Signed integer encoded into a string of one 8bit byte. The value must be in the range 128 through 127, inclusive. 
S2  Signed integer encoded into a string of two 8bit bytes. The value must be in the range 32768 through 32767, inclusive. 
S4  Signed integer encoded into a string of four 8bit bytes. The value must be in the range 2147483648 through 2147483647, inclusive. 
S8  Signed integer encoded into a string of eight 8bit bytes. The value must be in the range 9223372036854775808 through 9223372036854775807, inclusive. 
U1  Unsigned integer encoded into a string of one 8bit byte. The maximum value is 255. 
U2  Unsigned integer encoded into a string of two 8bit bytes. The maximum value is 65535. 
U4  Unsigned integer encoded into a string of four 8bit bytes. The maximum value is 4294967295. 
F4  IEEE floating point number encoded into a string of four 8bit bytes. 
F8  IEEE floating point number encoded into a string of eight 8bit bytes. 
Values beyond the range of format limits result in a <VALUE OUT OF RANGE> error. Specifying a negative number for an Unsigned format results in a <VALUE OUT OF RANGE> error. If n is a nonnumeric value (contains any nonnumeric characters) Caché performs conversion of a string to a numeric value. A string beginning with a nonnumeric character is converted to 0.
Caché rounds a fractional number to an integer value for all formats except F4 and F8.
You can use the IsBigEndian() class method to determine which bit ordering is used on your operating system platform: 1=bigendian bit order; 0=littleendian bit order.
WRITE $SYSTEM.Version.IsBigEndian()
$SCONVERT provides the inverse of the $NCONVERT operation.
Examples
The following example converts a series of unsigned numbers to twobyte encoded values:
FOR x=250:1:260 { ZZDUMP $NCONVERT(x,"U2") } QUIT
The following example performs the same operation in bigendian order:
FOR x=250:1:260 { ZZDUMP $NCONVERT(x,"U2",1) } QUIT
See Also

$SCONVERT function