diff --git a/amsstring4.code-workspace b/amsstring4.code-workspace
index 0adcda1..97796d0 100644
--- a/amsstring4.code-workspace
+++ b/amsstring4.code-workspace
@@ -3,8 +3,8 @@
 		{
 			"path": "."
 		},
-		{
-			"path": "../../sourceprojs23/amsstring3"
-		}
+		// {
+		// 	"path": "../../sourceprojs23/amsstring3"
+		// }
 	]
 }
\ No newline at end of file
diff --git a/build_linux64/libamsstring4.linux64.a b/build_linux64/libamsstring4.linux64.a
index 025bd53..16c3b01 100644
Binary files a/build_linux64/libamsstring4.linux64.a and b/build_linux64/libamsstring4.linux64.a differ
diff --git a/build_linux64/objstore/amsstring4_class.o b/build_linux64/objstore/amsstring4_class.o
index 0916c57..2dc679c 100644
Binary files a/build_linux64/objstore/amsstring4_class.o and b/build_linux64/objstore/amsstring4_class.o differ
diff --git a/build_linux64/objstore/amsstring4_convenience1.o b/build_linux64/objstore/amsstring4_convenience1.o
index 089b9fb..3b9cbbe 100644
Binary files a/build_linux64/objstore/amsstring4_convenience1.o and b/build_linux64/objstore/amsstring4_convenience1.o differ
diff --git a/build_linux64/tests b/build_linux64/tests
index 2574ac9..9bf1ec9 100644
Binary files a/build_linux64/tests and b/build_linux64/tests differ
diff --git a/include/amsstring4/amsstring4.hpp b/include/amsstring4/amsstring4.hpp
index cd0d9c8..a1fdb74 100644
--- a/include/amsstring4/amsstring4.hpp
+++ b/include/amsstring4/amsstring4.hpp
@@ -181,16 +181,16 @@ amsstring stripwhitespace(const amsstring &s);
 amsstring stripallwhitespace(const amsstring &s);
 
 //splits a string into contiguous sets of alphanumeric characters ignoring non-alphanums
-amsarray<amsstring> splitalphanum(const amsstring &s); //
+amsarray<amsstring> splitalphanum(const amsstring &s); 
 
 
 //splits into two guaranteed pieces
 //if an extension separator . is not encountered, the first piece will contain the entire string, the second ""
-amsarray<amsstring> splitext(const amsstring &s);
+amsarray<amsstring> path_splitext(const amsstring &s);
 
 //splits into two guaranteed pieces
 //if a path separator is not encountered, the second piece will contain the entire string, and the first ""
-amsarray<amsstring> splitpath(const amsstring &s);
+amsarray<amsstring> path_split(const amsstring &s);
 
 //selects between the outermost set of delimitleft and delimitright chars
 amsstring select_between(const amsstring &s, const ams_chartype delimitleft, const ams_chartype delimitright);
diff --git a/src.o b/src.o
new file mode 100644
index 0000000..35dff53
Binary files /dev/null and b/src.o differ
diff --git a/src/amsstring4/amsstring4_class.cpp b/src/amsstring4/amsstring4_class.cpp
index 1cb2ef8..d0772ef 100644
--- a/src/amsstring4/amsstring4_class.cpp
+++ b/src/amsstring4/amsstring4_class.cpp
@@ -52,7 +52,7 @@ namespace ams
     {
       ams_chartype cl = ams::tolower(c);
       bool ret = 0;
-      ret = ret || ( ((int)cl>=48) && ((int)cl<=57) ) || cl=='.' || cl=='e' || '-';
+      ret = ret || ( ((int)cl>=48) && ((int)cl<=57)) || cl=='.' || cl=='e' || cl=='-';
       return ret;
     }
     
diff --git a/src/amsstring4/amsstring4_convenience1.cpp b/src/amsstring4/amsstring4_convenience1.cpp
index 05ca3ab..a8f706c 100644
--- a/src/amsstring4/amsstring4_convenience1.cpp
+++ b/src/amsstring4/amsstring4_convenience1.cpp
@@ -354,7 +354,7 @@ amsstring stripallwhitespace(const amsstring &s)
 
 //splits into two guaranteed pieces
 //if an extension separator . is not encountered, the first piece will contain the entire string, the second ""
-amsarray<amsstring> splitext(const amsstring &s)
+amsarray<amsstring> path_splitext(const amsstring &s)
 {
     amsarray<amsstring> ret;
     ret.resize(2);
@@ -378,7 +378,7 @@ amsarray<amsstring> splitext(const amsstring &s)
 
 //splits into two guaranteed pieces
 //if a path separator is not encountered, the second piece will contain the entire string, and the first ""
-amsarray<amsstring> splitpath(const amsstring &s)
+amsarray<amsstring> path_split(const amsstring &s)
 {
     amsarray<amsstring> ret;
     ret.resize(2);
@@ -509,7 +509,7 @@ amsarray<amsstring> splitalphanum(const amsstring &s)
       I0 = I;
     }
 
-    if(mode==1 && (!amsstring_ischarnumeric(c) || I==length-1)
+    if(mode==1 && (!amsstring_ischarnumeric(c) || I>=(s.length-1)))
     {
       I1 = I;
       s2 = s.substring(I0,I1);
@@ -641,50 +641,76 @@ void amsstring4_test_convenience1a()
   printf("'%s' split: '%s' '%s'\n",s1.cstring,splitfirst(s1,"::")[0].cstring, splitfirst(s1,"::")[1].cstring);
 
   s1 = "somefilewithoutextension";
-  sa = splitext(s1);
-  printf("splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_splitext(s1);
+  printf("path_splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "somefilewithalittleext.";
-  sa = splitext(s1);
-  printf("splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_splitext(s1);
+  printf("path_splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "somefilewith.anextension";
-  sa = splitext(s1);
-  printf("splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_splitext(s1);
+  printf("path_splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "somefilewith.many.extensions";
-  sa = splitext(s1);
-  printf("splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_splitext(s1);
+  printf("path_splitext('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "somepathnoseparators";
-  sa = splitpath(s1);
-  printf("splitpath('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_split(s1);
+  printf("path_split('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "\\someotherpath";
-  sa = splitpath(s1);
-  printf("splitpath('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_split(s1);
+  printf("path_split('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "/someotherpath";
-  sa = splitpath(s1);
-  printf("splitpath('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_split(s1);
+  printf("path_split('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "C:\\someotherpath";
-  sa = splitpath(s1);
-  printf("splitpath('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_split(s1);
+  printf("path_split('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "C:\\some\\other\\path";
-  sa = splitpath(s1);
-  printf("splitpath('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_split(s1);
+  printf("path_split('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 
   s1 = "/some/other/path";
-  sa = splitpath(s1);
-  printf("splitpath('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
+  sa = path_split(s1);
+  printf("path_split('%s') = ['%s','%s']\n",s1.cstring,sa[0].cstring,sa[1].cstring);
 }   
 
 void amsstring4_test_convenience1b()
 {
+  amsstring s1,s2;
+  amsarray<amsstring> sa;
+  int I;
 
+  s1 = "1e2e3,45, 6.7E8,-9.13E24 ";
+  sa = splitalphanum(s1);
+  for(I=0;I<sa.length;I++)
+  {
+    printf("s[%d] = '%s'\n",I,sa[I].cstring);
+  }
 
 }
 
-};//end namespace ams
\ No newline at end of file
+};//end namespace ams
+
+
+
+/*
+Examples of numeric literals categorized by type:
+
+    Integer Literals (Decimal): 0, 123, 45678, -99
+    Floating-Point Literals (Decimal): 0.0, 1.0, 3.14159, -0.01, 123.456
+    Scientific Notation (Exponential): 1.2E3, 1.2e-3, -1.2E3, -1.2E-3 (equivalent to 
+
+, etc.)
+Hexadecimal Literals (Base 16): 0x7B, 0x1A, 0xCAFEBABE (prefixed with 0x or 0X)
+Binary Literals (Base 2): 0b1111011, 0B101 (prefixed with 0b or 0B)
+Octal Literals (Base 8): 0173, 0755 (prefixed with 0 in many languages)
+Long/Typed Literals: 12345L, 100u, 50LL (suffixes define specific data types)
+Formatted Literals: 1_000_000, 232_45_4519 (underscores for readability, e.g., in Java/Scala) 
+*/
\ No newline at end of file