Add arcsin, arccos, arctan.

1 files changed, 32 insertions, 11 deletions

diff --git a/src/parser.rs b/src/parser.rs
index badf286..0875d92 100644
--- a/src/parser.rs
+++ b/src/parser.rs
@@ -80,77 +80,98 @@ impl<'a> Parser<'a> {
         if self.symbol("sin") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::sin),
+                eval: Box::new(Num::sin),
             });
             return true;
         }
         if self.symbol("cos") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::cos),
+                eval: Box::new(Num::cos),
             });
             return true;
         }
         if self.symbol("tan") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::tan),
+                eval: Box::new(Num::tan),
+            });
+            return true;
+        }
+        if self.symbol("asin") || self.symbol("arcsin") {
+            self.stack.push(Op::Op {
+                prec: 3,
+                eval: Box::new(Num::asin),
+            });
+            return true;
+        }
+        if self.symbol("acos") || self.symbol("arccos") {
+            self.stack.push(Op::Op {
+                prec: 3,
+                eval: Box::new(Num::acos),
+            });
+            return true;
+        }
+        if self.symbol("atan") || self.symbol("arctan") {
+            self.stack.push(Op::Op {
+                prec: 3,
+                eval: Box::new(Num::atan),
             });
             return true;
         }
         if self.symbol("sqrt") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::sqrt),
+                eval: Box::new(Num::sqrt),
             });
             return true;
         }
         if self.symbol("log") || self.symbol("ln") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::log),
+                eval: Box::new(Num::log),
             });
             return true;
         }
         if self.symbol("log10") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::log10),
+                eval: Box::new(Num::log10),
             });
             return true;
         }
         if self.symbol("log2") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::log2),
+                eval: Box::new(Num::log2),
             });
             return true;
         }
         if self.symbol("floor") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::floor),
+                eval: Box::new(Num::floor),
             });
             return true;
         }
         if self.symbol("ceil") || self.symbol("ceiling") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::ceil),
+                eval: Box::new(Num::ceil),
             });
             return true;
         }
         if self.symbol("round") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::round),
+                eval: Box::new(Num::round),
             });
             return true;
         }
         if self.symbol("abs") {
             self.stack.push(Op::Op {
                 prec: 3,
-                eval: Box::new(eval::Num::abs),
+                eval: Box::new(Num::abs),
             });
             return true;
         }