Merge pull request #3315 from ziglang/mv-std-lib

Move std/ to lib/std/

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/std/math/nan.zig b/lib/std/math/nan.zig
new file mode 100644
index 0000000000..5a01a5b3bd
--- /dev/null
+++ b/lib/std/math/nan.zig
@@ -0,0 +1,24 @@
+const math = @import("../math.zig");
+
+/// Returns the nan representation for type T.
+pub fn nan(comptime T: type) T {
+    return switch (T) {
+        f16 => math.nan_f16,
+        f32 => math.nan_f32,
+        f64 => math.nan_f64,
+        f128 => math.nan_f128,
+        else => @compileError("nan not implemented for " ++ @typeName(T)),
+    };
+}
+
+/// Returns the signalling nan representation for type T.
+pub fn snan(comptime T: type) T {
+    // Note: A signalling nan is identical to a standard right now by may have a different bit
+    // representation in the future when required.
+    return switch (T) {
+        f16 => @bitCast(f16, math.nan_u16),
+        f32 => @bitCast(f32, math.nan_u32),
+        f64 => @bitCast(f64, math.nan_u64),
+        else => @compileError("snan not implemented for " ++ @typeName(T)),
+    };
+}