dconst_<0, 1>

Push double 0.0 or 1.0

Bytecode

Type Description
u1 dconst_0 opcode = 0x0E (14)
u1 dconst_1 opcode = 0x0F (15)

Stack ... => ..., <d>.word1, <d>.word2

Description

dconst_<d> pushes the constant double precision floating point number <d> onto the stack, where <d> is either 0 or 1. For example, to push the double precision float 0.0 onto the stack, use:

 dconst_0 ; push the double 0.0 onto the stack

Note that you could also use:
    ldc2_w 0.0    ; push the double 0.0 onto the stack

although this instruction takes more space in the class file and is typically less efficient.

Example

dconst_0    ; push the double 0.0 onto the stack
dconst_1    ; push the double 1.0 onto the stack