ref more math decls for better docs

lib/std/math.zig

@@ -202,54 +202,8 @@ pub const Complex = complex.Complex;
 
 pub const big = @import("math/big.zig");
 
-test "math" {
-    _ = @import("math/nan.zig");
-    _ = @import("math/isnan.zig");
-    _ = @import("math/fabs.zig");
-    _ = @import("math/ceil.zig");
-    _ = @import("math/floor.zig");
-    _ = @import("math/trunc.zig");
-    _ = @import("math/round.zig");
-    _ = @import("math/frexp.zig");
-    _ = @import("math/modf.zig");
-    _ = @import("math/copysign.zig");
-    _ = @import("math/isfinite.zig");
-    _ = @import("math/isinf.zig");
-    _ = @import("math/isnormal.zig");
-    _ = @import("math/signbit.zig");
-    _ = @import("math/scalbn.zig");
-    _ = @import("math/pow.zig");
-    _ = @import("math/powi.zig");
-    _ = @import("math/sqrt.zig");
-    _ = @import("math/cbrt.zig");
-    _ = @import("math/acos.zig");
-    _ = @import("math/asin.zig");
-    _ = @import("math/atan.zig");
-    _ = @import("math/atan2.zig");
-    _ = @import("math/hypot.zig");
-    _ = @import("math/exp.zig");
-    _ = @import("math/exp2.zig");
-    _ = @import("math/expm1.zig");
-    _ = @import("math/ilogb.zig");
-    _ = @import("math/ln.zig");
-    _ = @import("math/log.zig");
-    _ = @import("math/log2.zig");
-    _ = @import("math/log10.zig");
-    _ = @import("math/log1p.zig");
-    _ = @import("math/fma.zig");
-    _ = @import("math/asinh.zig");
-    _ = @import("math/acosh.zig");
-    _ = @import("math/atanh.zig");
-    _ = @import("math/sinh.zig");
-    _ = @import("math/cosh.zig");
-    _ = @import("math/tanh.zig");
-    _ = @import("math/sin.zig");
-    _ = @import("math/cos.zig");
-    _ = @import("math/tan.zig");
-
-    _ = @import("math/complex.zig");
-
-    _ = @import("math/big.zig");
+comptime {
+    std.meta.refAllDecls(@This());
 }
 
 pub fn floatMantissaBits(comptime T: type) comptime_int {

lib/std/meta.zig

@@ -552,3 +552,9 @@ pub fn fieldIndex(comptime T: type, comptime name: []const u8) ?comptime_int {
     }
     return null;
 }
+
+/// Given a type, reference all the declarations inside, so that the semantic analyzer sees them.
+pub fn refAllDecls(comptime T: type) void {
+    if (!builtin.is_test) return;
+    _ = declarations(T);
+}

lib/std/std.zig

@@ -62,69 +62,6 @@ pub const unicode = @import("unicode.zig");
 pub const valgrind = @import("valgrind.zig");
 pub const zig = @import("zig.zig");
 
-// Reference everything so it gets tested.
-test "" {
-    _ = AlignedArrayList;
-    _ = ArrayList;
-    _ = AutoHashMap;
-    _ = BloomFilter;
-    _ = BufMap;
-    _ = BufSet;
-    _ = Buffer;
-    _ = BufferOutStream;
-    _ = DynLib;
-    _ = HashMap;
-    _ = Mutex;
-    _ = PackedIntArrayEndian;
-    _ = PackedIntArray;
-    _ = PackedIntSliceEndian;
-    _ = PackedIntSlice;
-    _ = PriorityQueue;
-    _ = SinglyLinkedList;
-    _ = StaticallyInitializedMutex;
-    _ = SegmentedList;
-    _ = SpinLock;
-    _ = StringHashMap;
-    _ = ChildProcess;
-    _ = TailQueue;
-    _ = Thread;
-
-    _ = atomic;
-    _ = base64;
-    _ = build;
-    _ = c;
-    _ = coff;
-    _ = crypto;
-    _ = cstr;
-    _ = debug;
-    _ = dwarf;
-    _ = elf;
-    _ = event;
-    _ = fmt;
-    _ = fs;
-    _ = hash;
-    _ = hash_map;
-    _ = heap;
-    _ = http;
-    _ = io;
-    _ = json;
-    _ = lazyInit;
-    _ = macho;
-    _ = math;
-    _ = mem;
-    _ = meta;
-    _ = net;
-    _ = os;
-    _ = packed_int_array;
-    _ = pdb;
-    _ = process;
-    _ = rand;
-    _ = rb;
-    _ = sort;
-    _ = ascii;
-    _ = testing;
-    _ = time;
-    _ = unicode;
-    _ = valgrind;
-    _ = zig;
+comptime {
+    meta.refAllDecls(@This());
 }