shifted-add/sub-immediate? ( object -- ? )

Vocabulary

cpu.arm.64.assembler

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the shifted-add/sub-immediate class.

Definition

USING: combinators.short-circuit kernel math math.bitwise ;

IN: cpu.arm.64.assembler

: shifted-add/sub-immediate? ( object -- ? )
    dup integer? [
        {
            [ 0 = not ]
            [ 12 bits zero? ]
            [ -12 shift 12 unsigned-immediate? ]
        } 1&&
    ] [ drop f ] if ;