Fixed return type of absd in correctness checks.
Fixed return type of absd in correctness checks.


Former-commit-id: df0caf57a12a7a35fac2db80af329fe615f587c4
darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,darkbuck/Halide,darkbuck/Halide,Trass3r/Halide,Trass3r/Halide,Trass3r/Halide