dneg : negate a double : index : visitInsn()

Description

Removes the top double-precision float from the operand stack, negates it (i.e. inverts its sign), and pushes the negated result back onto the stack.

Note that, in IEEE double precision floating point arithmetic, negation is not quite the same as subtracting from 0. IEEE has two zeros, +0.0 and -0.0, and dneg applied to +0.0 is -0.0, whereas (+0.0 minus +0.0) is +0.0.

See also

ineg fneg lneg

Stack

Before	After
value-word1	result-word1
value-word2	result-word2
...	...

Bytecode

Type	Description
u1	dneg opcode = 0x77 (119)