BIN$

Syntax

BIN$ (decimal,digits) or

BIN$ (decimal [,digits]) (THOR only)

Location Toolkit II, THOR XVI

This function converts a signed integer decimal number to the equivalent binary number (to a specified number of binary digits ranging from 1 to 32). Negative values are also handled correctly.

Examples

  1. BIN (BIN$ (x,4)) = x

if x is any number between 0 and 15.

(2) A short function to compare two numbers using the mathematical ‘OR’ function. Do note however that the same function already exists on the QL, and the commands

PRINT 100||10 and PRINT _or(100,10) have exactly the same effect, although the BASIC version below does enable you to see what the function actually does:

100 DEFine FuNction _or(x,y)
110  a$=BIN$(x,32): b$=BIN$(y,32)
115  PRINT a$,b$
120  c$=FILL$('0',32)
130  FOR i=1 TO 32
140    IF a$(i)=1 OR b$(i)=1: c$(i)=1
150  END FOR i
155  PRINT c$
160  RETurn BIN(c$)
170 END DEFine _or

THOR XVI NOTE

The THOR XVI version of BIN$ will accept a value of zero for digits {or even the command in the form BIN$(decimal)}. In both of these cases the result is returned in the least number of Binary digits necessary to store the number, for example: PRINT BIN$(10)gives the result 1010.

THOR XVI WARNING

A second parameter of zero may crash some versions of this command other than on v6.41 of the THOR XVI.

CROSS-REFERENCE

See BIN and HEX, HEX$. Also refer to BIT%.