User's Manual

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Bome MIDI Translator: User's Manual 10 Rules and Variables

Expression rules use basic arithmetic (plus:+,minus:-,multiply:*,divide:/,

modulo: %) or binary operators (AND:&,OR:|,XOR:^, shift right: >>, shift

left: <<) to enter a value into a variable. A variable is selected from a drop-

down box on the left side of the equation, while the two variables and/or

numbers and operator are selected on the right side of the equation.

Expression rules are useful for processing basic operators on incoming

values to, for example, increase them or decrease them parametrically.

Expression Operators:

+ plus

Add the left operand to the right operand. Example:

pp=10

g0=pp+110

g0 has the value 120.→

Note: variables use a signed 32-bit range, i.e. they wrap at

2147483647 and -2147483648.

- minus

Subtract the right operand from the left operand. Example:

pp=99

g0=pp-110

g0 has the value -11.→

Note: variables use a signed 32-bit range, i.e. they wrap at

2147483647 and -2147483648.

* multiply

Multiply the left operand with the right operand. Example:

pp=2 * 22

pp has the value 44.→

Note: variables use a signed 32-bit range, i.e. multiplying

where the result exceeds 2147483647 will cause a truncated

result.

/ divide

Divide the left operand by the right operand and truncate the

decimals. Example:

pp=10

qq=127 / pp

qq has the value 12→

Note: prevent a division by 0! (undefined)

% modulo

Calculate the remainder of the division of the left operand by

the right operand. Example:

pp=10

qq=104 % pp

qq has the value 4→

Note: prevent modulo 0! (undefined)

& bit-wise AND

Calculate the combination of the left operand's bits AND the

right operand's bits. A given bit is set in the result when it is

set in both the left and right operand. Example:

tt=0x98 & 15

tt has the value 8→

Note: variables and calculations use 32-bit signed integer

numbers.