Hulk did something

[bytom/vapor.git] / vendor / gonum.org / v1 / gonum / floats / examples_test.go

diff --git a/vendor/gonum.org/v1/gonum/floats/examples_test.go b/vendor/gonum.org/v1/gonum/floats/examples_test.go
new file mode 100644 (file)
index 0000000..3bc59ad
--- /dev/null
+++ b/vendor/gonum.org/v1/gonum/floats/examples_test.go
@@ -0,0 +1,104 @@
+// Copyright 2013 The Gonum Authors. All rights reserved.
+// Use of this code is governed by a BSD-style
+// license that can be found in the LICENSE file
+
+package floats
+
+import (
+       "fmt"
+)
+
+// Set of examples for all the functions
+
+func ExampleAdd_simple() {
+       // Adding three slices together. Note that
+       // the result is stored in the first slice
+       s1 := []float64{1, 2, 3, 4}
+       s2 := []float64{5, 6, 7, 8}
+       s3 := []float64{1, 1, 1, 1}
+       Add(s1, s2)
+       Add(s1, s3)
+
+       fmt.Println("s1 =", s1)
+       fmt.Println("s2 =", s2)
+       fmt.Println("s3 =", s3)
+       // Output:
+       // s1 = [7 9 11 13]
+       // s2 = [5 6 7 8]
+       // s3 = [1 1 1 1]
+}
+
+func ExampleAdd_newslice() {
+       // If one wants to store the result in a
+       // new container, just make a new slice
+       s1 := []float64{1, 2, 3, 4}
+       s2 := []float64{5, 6, 7, 8}
+       s3 := []float64{1, 1, 1, 1}
+       dst := make([]float64, len(s1))
+
+       AddTo(dst, s1, s2)
+       Add(dst, s3)
+
+       fmt.Println("dst =", dst)
+       fmt.Println("s1 =", s1)
+       fmt.Println("s2 =", s2)
+       fmt.Println("s3 =", s3)
+       // Output:
+       // dst = [7 9 11 13]
+       // s1 = [1 2 3 4]
+       // s2 = [5 6 7 8]
+       // s3 = [1 1 1 1]
+}
+
+func ExampleAdd_unequallengths() {
+       // If the lengths of the slices are unknown,
+       // use Eqlen to check
+       s1 := []float64{1, 2, 3}
+       s2 := []float64{5, 6, 7, 8}
+
+       eq := EqualLengths(s1, s2)
+       if eq {
+               Add(s1, s2)
+       } else {
+               fmt.Println("Unequal lengths")
+       }
+       // Output:
+       // Unequal lengths
+}
+
+func ExampleAddConst() {
+       s := []float64{1, -2, 3, -4}
+       c := 5.0
+
+       AddConst(c, s)
+
+       fmt.Println("s =", s)
+       // Output:
+       // s = [6 3 8 1]
+}
+
+func ExampleCumProd() {
+       s := []float64{1, -2, 3, -4}
+       dst := make([]float64, len(s))
+
+       CumProd(dst, s)
+
+       fmt.Println("dst =", dst)
+       fmt.Println("s =", s)
+       // Output:
+       // dst = [1 -2 -6 24]
+       // s = [1 -2 3 -4]
+}
+
+func ExampleCumSum() {
+       s := []float64{1, -2, 3, -4}
+       dst := make([]float64, len(s))
+
+       CumSum(dst, s)
+
+       fmt.Println("dst =", dst)
+       fmt.Println("s =", s)
+       // Output:
+       // dst = [1 -1 2 -2]
+       // s = [1 -2 3 -4]
+}