uint.subbits.as.uint: Extract subbits from integer as unsigned int.

In dfsp-spirit/pcx: Read and Write 'PCX' Bitmap Image Files

Description

Extract bits start_index to stop_index from an 8 bit integer.

Usage

uint.subbits.as.uint(int8, start_index, stop_index)

Arguments

int8	integer, must be in range 0L..255L. The integer is of course stored as a 32 bit integer internally in R, but it must contain a value between 0 and 255, the other bits are ignored.
start_index	integer in range 1L..32L, the start bit index.
stop_index	integer in range 1L..32L, the stop bit index.

Value

an unsigned integer, the possible range depends on the number of bits.

Note

Thanks to Julian_Hn at stackoverflow for this function.

dfsp-spirit/pcx documentation built on Nov. 24, 2021, 5:29 p.m.