From dbd3ff2acd9ffe33eae155abcaa26521ce88ccae Mon Sep 17 00:00:00 2001
From: Zander Thannhauser <zthannhauser@gmail.com>
Date: Sun, 3 Aug 2025 23:03:48 -0500
Subject: [PATCH] handle decimals

---
 .gitignore |  1 +
 flake.nix  |  2 +-
 main.c     | 16 +++++++++++++++-
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/.gitignore b/.gitignore
index 451efb9..d0025de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 .direnv/
 bin/
 outputs/
+*.swp
diff --git a/flake.nix b/flake.nix
index adb1973..7234052 100644
--- a/flake.nix
+++ b/flake.nix
@@ -39,7 +39,7 @@
             pname = "qc";
             version = "1.0";
             src = ./.;
-            nativeBuildInputs = with pkgs; [ gcc gnumake readline.dev gmp.dev ];
+            nativeBuildInputs = with pkgs; [ gcc gnumake ];
             buildInputs = with pkgs; [ readline.dev gmp.dev ];
           };
       });
diff --git a/main.c b/main.c
index 653ceee..855a83f 100644
--- a/main.c
+++ b/main.c
@@ -377,7 +377,20 @@ struct value* scan(const char* text)
     {
         mpq_t factor; mpq_init(factor);
 
-        TODO;
+        moving++;
+
+        mpq_set_si(factor, 1, 10);
+
+        while ('0' <= *moving && *moving <= '9')
+        {
+            mpq_set_si(tmp, *moving++ - '0', 1);
+
+            mpq_mul(tmp, factor, tmp);
+
+            mpq_add(value, value, tmp);
+
+            mpq_div(factor, factor, base);
+        }
 
         mpq_clear(factor);
     }
@@ -570,6 +583,7 @@ struct expression* parse(const char* text)
 
                 while (false
                     || *moving == '_'
+                    || *moving == '.'
                     || ('0' <= *moving && *moving <= '9'))
                 {
                     append(*moving++);