Fix compile errors

Author: Trevor-Strong

src/root.zig

@@ -18,7 +18,7 @@ const ReduceOp = std.builtin.ReduceOp;
 /// A compile error is raised if the type passed to this function is not an array
 /// type of vector compatible elements or is an array with a sentinel value.
 pub fn Vec(comptime ArrayType: type) type {
-    const arr_info = @typeInfo(ArrayType).Array;
+    const arr_info = @typeInfo(ArrayType).array;
     if (arr_info.sentinel != null)
         @compileError("Vectors cannot have sentinel values");
     return @Vector(arr_info.len, arr_info.child);
@@ -241,7 +241,7 @@ pub fn Signed(comptime V: type) type {
     const vec_info = @typeInfo(V).vector;
     return switch (vec_info.child) {
         isize => V,
-        usize => Vec([vec_info]isize),
+        usize => Vec([vec_info.len]isize),
         else => switch (@typeInfo(vec_info.child)) {
             .int => |int_info| Vec([vec_info.len]std.meta.Int(.signed, int_info.bits)),
             else => unreachable,
@@ -250,7 +250,7 @@ pub fn Signed(comptime V: type) type {
 }
 
 test Signed {
-    comptime  {
+    comptime {
         assert(Signed(Vec([15]u32)) == Vec([15]i32));
         assert(Signed(Vec([27]i32)) == Vec([27]i32));
         assert(Signed(Vec([0]u1)) == Vec([0]i1));
@@ -273,14 +273,18 @@ pub inline fn signedCast(int_vec: anytype) Signed(From(@TypeOf(int_vec))) {
 /// elements are unsigned integers the same size element type of `V`
 pub fn Unsigned(comptime V: type) type {
     const vec_info = @typeInfo(V).vector;
-    return switch (@typeInfo(vec_info.child)) {
-        .int => |int_info| Vec([vec_info.len]std.meta.Int(.unsigned, int_info.bits)),
-        else => unreachable,
+    return switch (vec_info.child) {
+        usize => V,
+        isize => Vec([vec_info.len]usize),
+        else => switch (@typeInfo(vec_info.child)) {
+            .int => |int_info| Vec([vec_info.len]std.meta.Int(.unsigned, int_info.bits)),
+            else => unreachable,
+        },
     };
 }
 
 test Unsigned {
-    comptime  {
+    comptime {
         assert(Unsigned(Vec([15]u32)) == Vec([15]u32));
         assert(Unsigned(Vec([27]i32)) == Vec([27]u32));
         assert(Unsigned(Vec([0]i1)) == Vec([0]u1));