And

Command Summary

Boolean AND comparison of expressions or groupings of expressions.

Command Syntax

BooleanExpr1 and BooleanExpr2
BooleanList1 and BooleanList2
BooleanMatrix1 and BooleanMatrix2
Integer1 and Integer2

The and command compares two Boolean expressions (or lists or matrices of expressions) and performs the logical AND comparison, where the output is TRUE if and only if both inputs are also TRUE.

Command Output
0 and 0 0
1 and 0 0
0 and 1 0
1 and 1 1

and can also be used to simplify logical conditions. For example,

``````:x≥3 and x≥4
outputs
:x≥4```
```

because, in order to satisfy both logical conditions, x need only satisfy x≥4. and can perform this process on a list or matrix of Boolean expressions:

``````:{x≥3,x≤0} and {x≥4,x≤-2}
outputs
:{x≥4,x≤-2}```
```

which is the intersection of two inequalities. This can be thought of as the overlap of two regions of a number line, where x must lie in order to satisfy all of the logical conditions simultaneously.

and's final use is for bitwise comparison of integers. Consider two integers, 24 and 17, which when converted to binary become 0b11000 and 0b10001 respectively. To compare the two integers, and compares each bit of the binary number, outputing 1 when both bits are 1 and 0 otherwise:

``````0b11000: 24
0b10001: 17
-----  --
0b10000: 16```
```

Integers can be entered in any base for use with and, including binary (0b) and hexadecimal (0h). The output will match the base of the inputs (if they are identical), defaulting to decimal.