dconst_d : push the double 0.0 or 1.0 : index :

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

See also

bipush sipush ldc ldc_w ldc2_w aconst_null iconst_m1 iconst_n lconst_l fconst_f

Stack

Before	After
...	<d>-word1
	<d>-word2
	...

Bytecode

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