From 5163fb0a33e9ef76c092a6369c45262c5785a4fd Mon Sep 17 00:00:00 2001
From: Stephen Chung <schungx@live.com>
Date: Wed, 15 Sep 2021 10:41:35 +0800
Subject: [PATCH] Upgrade to rust-decimal 1.16 and add sin/cos/tan.

---
 CHANGELOG.md               | 1 +
 Cargo.toml                 | 2 +-
 src/packages/math_basic.rs | 9 +++++++++
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 760c5bb0..90425e73 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -29,6 +29,7 @@ Enhancements
 * `Dynamic::as_string` and `Dynamic::as_immutable_string` are deprecated and replaced by `into_string` and `into_immutable_string` respectively.
 * Added a number of constants to `Dynamic`.
 * Added a number of constants and `fromXXX` constant methods to `Dynamic`.
+* Added `sin`, `cos` and `tan` for `Decimal` values.
 
 ### `Decimal` Values
 
diff --git a/Cargo.toml b/Cargo.toml
index f360c3ef..ef48ed62 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -92,7 +92,7 @@ default-features = false
 optional = true
 
 [dependencies.rust_decimal]
-version = "1.15"
+version = "1.16"
 default-features = false
 features = ["maths"]
 optional = true
diff --git a/src/packages/math_basic.rs b/src/packages/math_basic.rs
index f3c9c5ea..0f9f6a88 100644
--- a/src/packages/math_basic.rs
+++ b/src/packages/math_basic.rs
@@ -325,6 +325,15 @@ mod decimal_functions {
         }
     }
 
+    pub fn sin(x: Decimal) -> Decimal {
+        x.sin()
+    }
+    pub fn cos(x: Decimal) -> Decimal {
+        x.cos()
+    }
+    pub fn tan(x: Decimal) -> Decimal {
+        x.tan()
+    }
     #[rhai_fn(return_raw)]
     pub fn sqrt(x: Decimal) -> Result<Decimal, Box<EvalAltResult>> {
         x.sqrt()