From aa882c10fbc832150c932a8cdcf9926f2fa6c9fe Mon Sep 17 00:00:00 2001
From: DiamondNether90 <diamondnether941@gmail.com>
Date: Fri, 12 Sep 2025 19:59:53 +1000
Subject: [PATCH] Using the Error Function

---
 packages/math/math.grnd       | 8 ++++++--
 packages/strings/strings.grnd | 8 +++-----
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/packages/math/math.grnd b/packages/math/math.grnd
index 4455ea1..22f1db6 100644
--- a/packages/math/math.grnd
+++ b/packages/math/math.grnd
@@ -62,7 +62,7 @@ fun -int !factorial -int &in
     return $ans
 
     @error
-    divide 1 0 &store
+    error "Cannot find factorial of a negative integer"
 endfun
 
 fun -double !cos -double &in
@@ -206,4 +206,8 @@ fun -double !sqrt -double &in
     return $ans
 
     @error
-endfun
\ No newline at end of file
+    error "Cannot find square root of a negative double"
+endfun
+
+pusharg -0.5
+call !sqrt &store
\ No newline at end of file
diff --git a/packages/strings/strings.grnd b/packages/strings/strings.grnd
index 376ced5..a92cb10 100644
--- a/packages/strings/strings.grnd
+++ b/packages/strings/strings.grnd
@@ -46,14 +46,11 @@ endfun
 fun -string !mid -string &str -int &idx -int &len
     set &ans ""
     lesser $idx 0 &store
-    if $store %end
+    if $store %negend
     greater $len 0 &store
     if $store %loop
     return ""
     @loop
-        getstrsize $str &store
-        equal $store $idx &store
-        if $store %end
         getstrcharat $str $idx &store
         add $ans $store &ans
         add $idx 1 &idx
@@ -65,7 +62,8 @@ fun -string !mid -string &str -int &idx -int &len
     @return
     return $ans
 
-    @end
+    @negend
+    error "Cannot start mid at a negative index"
 endfun
 
 fun -string !inBrackets -string &str -char &left -char &right -int &instance