1 files changed, 9 insertions, 1 deletions

diff --git a/bc.library b/bc.library
index 6b94a01..76a2722 100644
--- a/bc.library
+++ b/bc.library
@@ -5,7 +5,7 @@
  * The following functions are available (aliases in parentheses):
  * General utility: max, min, sgn, abs, floor, ceiling
  * Arithmetic: factorial(fact), binomial(binom, bin), gcd, lcm, totient(phi)
- * Calculus: exp, log(ln), pow, sin, cos, tan, cosh, sinh, tanh
+ * Calculus: exp, log(ln), pow, root, sin, cos, tan, cosh, sinh, tanh
  *           atan, atan2, asin, acos, atanh, asinh, acosh
  * Constants (as functions): e(), pi()
  *
@@ -187,6 +187,14 @@ define pow(a, b) {
         return a ^ b
 }
 
+define root(a, b) {
+        auto res
+        scale += 5
+        res = pow(b, 1/a)
+        scale -= 5
+        return res / 1
+}
+
 define trig(x, ii, in, id) {
         auto i, n, d, series
         scale += 10