maths: add integer power operation

2015-01-21 23:35:34 +11:00 · 2015-01-21 23:35:34 +11:00 · 4260c91cd0
commit 4260c91cd0
parent d3c300053b
2 changed files with 19 additions and 0 deletions
--- a/maths.hpp
+++ b/maths.hpp
@ -37,6 +37,11 @@ pow2 [[gnu::pure]] (T value)
    { return value * value; }


+template <typename T>
+T
+pow (T x, unsigned y);
+
+
 template <typename T>
 bool
 is_pow2 [[gnu::pure]] (T value);
--- a/maths.ipp
+++ b/maths.ipp
@ -34,3 +34,17 @@ align (T value, U size) {

    return divup (value, size) * size;
 }
+
+
+//-----------------------------------------------------------------------------
+template <typename T>
+T
+pow (T x, unsigned y)
+{
+    T v = 1;
+
+    for (unsigned i = 1; i <= y; ++i)
+        v *= x;
+
+    return v;
+}