std.math.complex: tighten existing test bounds

1 files changed, 3 insertions, 4 deletions

diff --git a/lib/std/math/complex/sin.zig b/lib/std/math/complex/sin.zig
index 3ca2419e43..5ce5b335f8 100644
--- a/lib/std/math/complex/sin.zig
+++ b/lib/std/math/complex/sin.zig
@@ -12,12 +12,11 @@ pub fn sin(z: anytype) Complex(@TypeOf(z.re, z.im)) {
     return Complex(T).init(q.im, -q.re);
 }
 
-const epsilon = 0.0001;
-
 test sin {
+    const epsilon = math.floatEps(f32);
     const a = Complex(f32).init(5, 3);
     const c = sin(a);
 
-    try testing.expect(math.approxEqAbs(f32, c.re, -9.654126, epsilon));
-    try testing.expect(math.approxEqAbs(f32, c.im, 2.841692, epsilon));
+    try testing.expectApproxEqAbs(-9.654126, c.re, epsilon);
+    try testing.expectApproxEqAbs(2.8416924, c.im, epsilon);
 }