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-rw-r--r--std/math/complex/acos.zig1
1 files changed, 1 insertions, 0 deletions
diff --git a/std/math/complex/acos.zig b/std/math/complex/acos.zig
index 8aed26a71b..f3526cc9ff 100644
--- a/std/math/complex/acos.zig
+++ b/std/math/complex/acos.zig
@@ -4,6 +4,7 @@ const math = std.math;
const cmath = math.complex;
const Complex = cmath.Complex;
+/// Returns the arc-cosine of z.
pub fn acos(z: var) Complex(@typeOf(z.re)) {
const T = @typeOf(z.re);
const q = cmath.asin(z);