Mesa (master): c99_math: Implement exp2f for MSVC.

[Matt Turner]

Module: Mesa
Branch: master
Commit: ecc559218d0a544f8a5f878c500f125c2d588d82
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ecc559218d0a544f8a5f878c500f125c2d588d82

Author: Matt Turner <mattst88 at gmail.com>
Date:   Wed Jul 15 21:28:56 2015 -0700

c99_math: Implement exp2f for MSVC.

Reviewed-by: Jose Fonseca <jfonseca at vmware.com>

---

 include/c99_math.h |    6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/c99_math.h b/include/c99_math.h
index 7ed7cc2..0ca5a73 100644
--- a/include/c99_math.h
+++ b/include/c99_math.h
@@ -140,6 +140,12 @@ llrintf(float f)
    return rounded;
 }
 
+static inline float
+exp2f(float f)
+{
+   return powf(2.0f, f);
+}
+
 #endif /* C99 */