wip math

1 files changed, 66 insertions, 0 deletions

diff --git a/ethutil/math/dist_test.go b/ethutil/math/dist_test.go
new file mode 100644
index 000000000..90e302f44
--- /dev/null
+++ b/ethutil/math/dist_test.go
@@ -0,0 +1,66 @@
+package math
+
+import (
+	"fmt"
+	"math/big"
+	"testing"
+)
+
+type summer struct {
+	numbers []*big.Int
+}
+
+func (s summer) Len() int { return len(s.numbers) }
+func (s summer) Sum(i int) *big.Int {
+	return s.numbers[i]
+}
+
+func TestSum(t *testing.T) {
+	summer := summer{numbers: []*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)}}
+	sum := Sum(summer)
+	if sum.Cmp(big.NewInt(6)) != 0 {
+		t.Errorf("not 6", sum)
+	}
+}
+
+func TestDist(t *testing.T) {
+	var vectors = []Vector{
+		Vector{big.NewInt(1000), big.NewInt(1234)},
+		Vector{big.NewInt(500), big.NewInt(10023)},
+		Vector{big.NewInt(1034), big.NewInt(1987)},
+		Vector{big.NewInt(1034), big.NewInt(1987)},
+		Vector{big.NewInt(8983), big.NewInt(1977)},
+		Vector{big.NewInt(98382), big.NewInt(1887)},
+		Vector{big.NewInt(12398), big.NewInt(1287)},
+		Vector{big.NewInt(12398), big.NewInt(1487)},
+		Vector{big.NewInt(12398), big.NewInt(1987)},
+		Vector{big.NewInt(12398), big.NewInt(128)},
+		Vector{big.NewInt(12398), big.NewInt(1987)},
+		Vector{big.NewInt(1398), big.NewInt(187)},
+		Vector{big.NewInt(12328), big.NewInt(1927)},
+		Vector{big.NewInt(12398), big.NewInt(1987)},
+		Vector{big.NewInt(22398), big.NewInt(1287)},
+		Vector{big.NewInt(1370), big.NewInt(1981)},
+		Vector{big.NewInt(12398), big.NewInt(1957)},
+		Vector{big.NewInt(42198), big.NewInt(1987)},
+	}
+
+	VectorsBy(GasSort).Sort(vectors)
+	fmt.Println(vectors)
+
+	BP := big.NewInt(15)
+	GL := big.NewInt(1000000)
+	EP := big.NewInt(100)
+	fmt.Println("BP", BP, "GL", GL, "EP", EP)
+	GP := GasPrice(BP, GL, EP)
+	fmt.Println("GP =", GP, "Wei per GU")
+
+	S := len(vectors) / 4
+	fmt.Println("L", len(vectors), "S", S)
+	for i := 1; i <= S*4; i += S {
+		fmt.Printf("T%d = %v\n", i, vectors[i])
+	}
+
+	g := VectorSum(GasSum).Sum(vectors)
+	fmt.Printf("G = ∑g* (%v)\n", g)
+}