categorize nan behavior test

move it from bugs/xxx.zig to its own category

Author: andrewrk

test/behavior.zig

@@ -189,6 +189,7 @@ test {
     _ = @import("behavior/merge_error_sets.zig");
     _ = @import("behavior/muladd.zig");
     _ = @import("behavior/namespace_depends_on_compile_var.zig");
+    _ = @import("behavior/nan.zig");
     _ = @import("behavior/null.zig");
     _ = @import("behavior/optional.zig");
     _ = @import("behavior/packed-struct.zig");
@@ -253,7 +254,6 @@ test {
         builtin.zig_backend != .stage2_c and
         builtin.zig_backend != .stage2_spirv64)
     {
-        _ = @import("behavior/bugs/14198.zig");
         _ = @import("behavior/export.zig");
     }
 }

test/behavior/bugs/14198.zig renamed to test/behavior/nan.zig

@@ -1,3 +1,4 @@
+const builtin = @import("builtin");
 const std = @import("std");
 const math = std.math;
 const mem = std.mem;
@@ -21,6 +22,12 @@ const qnan_f128: f128 = math.nan(f128);
 const snan_f128: f128 = math.snan(f128);
 
 test "nan memory equality" {
+    if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_c) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_spirv64) return error.SkipZigTest;
+
     // signaled
     try testing.expect(mem.eql(u8, mem.asBytes(&snan_u16), mem.asBytes(&snan_f16)));
     try testing.expect(mem.eql(u8, mem.asBytes(&snan_u32), mem.asBytes(&snan_f32)));