preserve the changes fixing tm2/pkg/overflow

tm2/pkg/overflow/README.md

@@ -2,65 +2,59 @@
 
 Check for int/int8/int16/int64/int32 integer overflow in Golang arithmetic.
 
-Forked from https://github.com/JohnCGriffin/overflow
+Originally forked from https://github.com/JohnCGriffin/overflow.
 
 ### Install
-```
-go get github.com/johncgriffin/overflow
-```
-Note that because Go has no template types, the majority of repetitive code is 
-generated by overflow_template.sh.  If you have to change an
-algorithm, change it there and regenerate the Go code via:
-```
+
+The majority of repetitive code is generated by overflow_template.sh. If you
+have to change an algorithm, change it there and regenerate the Go code via:
+
+```sh
 go generate
 ```
+
 ### Synopsis
 
-```
+```go
 package main
 
 import "fmt"
 import "math"
-import "github.com/JohnCGriffin/overflow"
+import "github.com/gnolang/gno/tm2/pkg/overflow"
 
 func main() {
 
 	addend := math.MaxInt64 - 5
 
 	for i := 0; i < 10; i++ {
 		sum, ok := overflow.Add(addend, i)
-		fmt.Printf("%v+%v -> (%v,%v)\n",
+		fmt.Printf("%v+%v -> (%v, %v)\n",
 			addend, i, sum, ok)
 	}
 
 }
 ```
+
 yields the output
-```
-9223372036854775802+0 -> (9223372036854775802,true)
-9223372036854775802+1 -> (9223372036854775803,true)
-9223372036854775802+2 -> (9223372036854775804,true)
-9223372036854775802+3 -> (9223372036854775805,true)
-9223372036854775802+4 -> (9223372036854775806,true)
-9223372036854775802+5 -> (9223372036854775807,true)
-9223372036854775802+6 -> (0,false)
-9223372036854775802+7 -> (0,false)
-9223372036854775802+8 -> (0,false)
-9223372036854775802+9 -> (0,false)
+
+```console
+9223372036854775802+0 -> (9223372036854775802, true)
+9223372036854775802+1 -> (9223372036854775803, true)
+9223372036854775802+2 -> (9223372036854775804, true)
+9223372036854775802+3 -> (9223372036854775805, true)
+9223372036854775802+4 -> (9223372036854775806, true)
+9223372036854775802+5 -> (9223372036854775807, true)
+9223372036854775802+6 -> (0, false)
+9223372036854775802+7 -> (0, false)
+9223372036854775802+8 -> (0, false)
+9223372036854775802+9 -> (0, false)
 ```
 
 For int, int64, and int32 types, provide Add, Add32, Add64, Sub, Sub32, Sub64, etc.  
-Unsigned types not covered at the moment, but such additions are welcome.
 
 ### Stay calm and panic
 
-There's a good case to be made that a panic is an unidiomatic but proper response.  Iff you
-believe that there's no valid way to continue your program after math goes wayward, you can
-use the easier Addp, Mulp, Subp, and Divp versions which return the normal result or panic.
-
-
-
-
-
-
-
+There's a good case to be made that a panic is an unidiomatic but proper
+response. If you believe that there's no valid way to continue your program
+after math goes wayward, you can use the easier Addp, Mulp, Subp, and Divp
+versions which return the normal result or panic.