| nybble {ProTrackR} | R Documentation |
Get the high or low nybble of a raw value
Description
Get the high or low nybble of a raw value and return as integer value [0,15].
Usage
nybble(raw_dat, which = c("low", "high"))
loNybble(raw_dat)
hiNybble(raw_dat)
Arguments
raw_dat |
A vector of class |
which |
A character string indicating whether the high or low nybble should
be returnd. It should either be |
Details
A raw is basically a byte, composed of 8 bits (zeros and ones).
A nybble is a 4 bit value. Hence, a raw value (or byte) is composed of
two nybbles. The leftmost nybble of a raw value is refered to as the
high nybble, the rightmost nybble is referred to as the low nybble.
These functions return either the high or low nybbles of raw data as integer
values [0,15].
As ProTracker stores some information as nybbles this function can be
used to retrieve this info.
Value
A vector of the same length as raw_dat holding integer values.
Author(s)
Pepijn de Vries
See Also
Other nybble.functions:
nybbleToSignedInt(),
signedIntToNybble()
Other raw.operations:
as.raw(),
nybbleToSignedInt(),
rawToCharNull(),
rawToPTModule(),
rawToSignedInt(),
rawToUnsignedInt(),
signedIntToNybble(),
signedIntToRaw(),
unsignedIntToRaw()
Other integer.operations:
nybbleToSignedInt(),
rawToSignedInt(),
rawToUnsignedInt(),
signedIntToNybble(),
signedIntToRaw(),
unsignedIntToRaw(),
waveform()
Examples
## this will return 0x0f:
hiNybble(as.raw(0xf3))
## which is the same as:
nybble(as.raw(0xf3), "high")
## this will return 0x03:
loNybble(as.raw(0xf3))
## which is the same as:
nybble(as.raw(0xf3), "low")