Initial commit

providers/math/math.go

@@ -0,0 +1,40 @@
+package math
+
+import "math"
+import "html/template"
+import "git.tebibyte.media/sashakoshka/step"
+
+var _ step.FuncProvider = new(Provider)
+
+// Provider provides math functions.
+type Provider struct {
+	
+}
+
+// FuncMap fulfills the step.FuncProvider interface.
+func (this *Provider) FuncMap () template.FuncMap {
+	return template.FuncMap {
+		"add":  funcAdd,
+		"sub":  funcSub,
+		"mul":  funcMul,
+		"div":  funcDiv,
+		"pow":  math.Pow,
+		"sqrt": math.Sqrt,
+	}
+}
+
+func funcAdd (a, b float64) float64 {
+	return a + b
+}
+
+func funcSub (a, b float64) float64 {
+	return a - b
+}
+
+func funcMul (a, b float64) float64 {
+	return a * b
+}
+
+func funcDiv (a, b float64) float64 {
+	return a / b
+}