From eeae7b1ce54835e4f63b4c7482040f8cd33da2f4 Mon Sep 17 00:00:00 2001
From: tareknaser360 <tareknaser360@gmail.com>
Date: Wed, 1 Mar 2023 11:55:58 +0200
Subject: [PATCH] added exp2 function

---
 integration_tests/test_math.py | 8 +++++++-
 src/runtime/math.py            | 7 +++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/integration_tests/test_math.py b/integration_tests/test_math.py
index 315b4efb8e..3e2a071564 100644
--- a/integration_tests/test_math.py
+++ b/integration_tests/test_math.py
@@ -1,4 +1,4 @@
-from math import (factorial, isqrt, perm, comb, degrees, radians, exp, pow,
+from math import (factorial, isqrt, perm, comb, degrees, radians, exp, exp2, pow,
                   ldexp, fabs, gcd, lcm, floor, ceil, remainder, expm1, fmod, log1p, trunc,
                   modf, fsum, prod, dist)
 import math
@@ -60,6 +60,11 @@ def test_exp():
     i = exp(2.34)
     assert abs(i - 10.381236562731843) < eps
 
+def test_exp2():
+    i: f64
+    i = exp2(2.34)
+    assert abs(i - 5.06302637588112) < eps
+
 
 def test_pow():
     eps: f64
@@ -262,6 +267,7 @@ def check():
     test_degrees()
     test_radians()
     test_exp()
+    test_exp2()
     test_pow()
     test_fabs()
     test_ldexp()
diff --git a/src/runtime/math.py b/src/runtime/math.py
index 203582c565..f248de3b5f 100644
--- a/src/runtime/math.py
+++ b/src/runtime/math.py
@@ -466,6 +466,13 @@ def exp(x: f64) -> f64:
     return e**x
 
 
+def exp2(x: f64) -> f64:
+    """
+    Return 2 raised to the power `x`.
+    """
+    return 2**x
+
+
 def mod(a: i32, b: i32) -> i32:
     """
     Returns a%b