BIC, BIS

Portability Subroutines: Perform a bit-level set and clear for integers.

Module

USE IFPORT

CALL BIC (bitnum, target)

CALL BIS (bitnum, target)

bitnum	(Input) INTEGER(4). Bit number to set. Must be in the range 0 (least significant bit) to 31 (most significant bit) if `target` is INTEGER(4). If `target` is INTEGER(8), bitnum must be in range 0 to 63.
target	(Input) INTEGER(4) or INTEGER(8). Variable whose bit is to be set.

BIC sets bit bitnum of target to 0; BIS sets bit bitnum to 1.

CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB

Consider the following:

USE IFPORT

integer(4) bitnum, target_i4

integer(8) target_i8

target_i4 = Z'AAAA'

bitnum = 1

call BIC(bitnum, target_i4)

target_i8 = Z'FFFFFFFF00000000'

bitnum = 40

call BIC(bitnum, target_i8)

bitnum = 0

call BIS(bitnum, target_i4)

bitnum = 1

call BIS(bitnum, target_i8)

print '(" integer*4 result ",Z)', target_i4

print '(" integer*8 result ",Z)', target_i8

end