#92 Update readmes

1 files changed, 1 insertions, 46 deletions

diff --git a/chapter13/README.md b/chapter13/README.md
index 892f7170..1fe2097a 100644
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+++ b/chapter13/README.md
@@ -1,49 +1,4 @@
-# Chapter 12: Floats, References and Arrays
-
-In this chapter we add a series of new types and some modest syntax.
-
-## Floats
-
-Floating point values start with the `flt` type and compute IEEE754 64-bit arithmetic.
-Integer expressions auto-widen to floats when involved in a float expression.
-
-```java
-flt f = 0.5;
-int x = 2;
-f = f+x;     // Auto-widen x to 2.0, result is 2.5
-f = f+true;  // Since bools are just synonyms for integers 0,1 they auto-widen also
-```
-
-
-Here is Newton's method to a square root:
-```java
-flt guess = arg;  // Initial guess is just argument
-while( true ) {
-    // Next guess from Newton's method
-    flt next = (arg/guess + guess)/2;
-    // Break if hit fixed point
-    if( next == guess ) break;
-    guess = next;
-}
-return guess;
-```
-When run with argument 2.0, produces 1.414213562373095.
-
-Floating point operations have their own Nodes:
-
-| Node                   | Op                   |
-|------------------------|----------------------|
-| AddF, SubF, MulF, DivF | Basic binary FP ops  |
-| MinusF                 | Unary negate         |
-| EQF, LTF, LEF          | FP compare operators |
-
-And their own section in the Type lattice:
-
-Within the Type Lattice, we now add the following domain:
-
-* Float type - Float values.  The same shape as the Integer values, but floats
-  with a TOP, BOT and constants
-
+# Chapter 13: References
 
 ## References