fixing inc / dec issues

Author: leios

src/atomics.jl

@@ -9,7 +9,7 @@ export @atomic, atomic_add!, atomic_sub!, atomic_and!, atomic_or!, atomic_xor!,
 # helper functions for inc and dec
 
 function dec(a::T,b::T) where T
-    ((a == 0) | (a > b)) ? b : (old-T(1))
+    ((a == 0) | (a > b)) ? b : (a-T(1))
 end
 
 function inc(a::T,b::T) where T

test/atomic_test.jl

@@ -79,10 +79,10 @@ function atomics_testsuite(backend)
         for T in types
             A = ArrayT{T}([1024,1024])
 
-            kernel = atomic_inc_kernel(backend(), 4)
+            kernel = atomic_dec_kernel(backend(), 4)
             wait(kernel(A, T(512), ndrange=(256)))
 
-            @test Array(A)[2] == 255
+            @test Array(A)[2] == 257
         end
     end