| <number> = ~<number> Operators: Bitwise Not "~"Bit toggle, bitwise Operators: Boolean Negation "!"negation. Flow control: if … thenFlow control: try … thenThe Add "+": Monadic operator "+"
 Subtract "-": Monadic operator "-"
 Built-in operators: monadic operators:monadic operator ~ Flow control: returnreturns Flow control: if … then
 Flow control: try … thenthe 2'Operators: Bitwise Not "~"s complement of Flow control: if … then
 Flow control: try … thenthe supplied numeric Glossary: Valuevalue.
 List functions: thisThis is Flow control: if … then
 Flow control: try … thenthe same as subtracting it from -1.
 e.g.: vipsi> Instructions: putput ~20  -21
vipsi> Instructions: putput ~1.5  -2.5 |