From efef5bcc8958e4305d5d89c424a4791a80b0babd Mon Sep 17 00:00:00 2001
From: Sudoer <pratushrai0309@gmail.com>
Date: Sun, 8 Oct 2023 14:50:48 +0530
Subject: [PATCH] math: add missing docstrings for math.log_gamma_sign and for
 the complex.complex constructor function (#19523)

---
 vlib/math/complex/complex.v | 2 ++
 vlib/math/gamma.v           | 1 +
 2 files changed, 3 insertions(+)

diff --git a/vlib/math/complex/complex.v b/vlib/math/complex/complex.v
index a2efbceda5d5d8..17232a513fdc74 100644
--- a/vlib/math/complex/complex.v
+++ b/vlib/math/complex/complex.v
@@ -12,6 +12,7 @@ pub mut:
 	im f64
 }
 
+// complex returns a complex struct with the given `re` and `im`
 pub fn complex(re f64, im f64) Complex {
 	return Complex{re, im}
 }
@@ -30,6 +31,7 @@ pub fn (c Complex) abs() f64 {
 	return math.hypot(c.re, c.im)
 }
 
+// mod returns the modulus value of `c`
 pub fn (c Complex) mod() f64 {
 	return c.abs()
 }
diff --git a/vlib/math/gamma.v b/vlib/math/gamma.v
index e0061db39b4749..a00f390180eb7d 100644
--- a/vlib/math/gamma.v
+++ b/vlib/math/gamma.v
@@ -139,6 +139,7 @@ pub fn log_gamma(x f64) f64 {
 	return y
 }
 
+// log_gamma_sign returns the natural logarithm and sign (-1 or +1) of Gamma(x)
 pub fn log_gamma_sign(a f64) (f64, int) {
 	mut x := a
 	ymin := 1.461632144968362245