Mesa (master): c99_math: (trivial) implement exp2 for MSVC too

[Roland Scheidegger]

Module: Mesa
Branch: master
Commit: 2b916c6e47862d82b5545e962ebb83b811904c3b
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=2b916c6e47862d82b5545e962ebb83b811904c3b

Author: Roland Scheidegger <sroland at vmware.com>
Date:   Wed Jul 29 22:20:04 2015 +0200

c99_math: (trivial) implement exp2 for MSVC too

Unsurprisingly doesn't build otherwise with old msvc.

---

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

diff --git a/include/c99_math.h b/include/c99_math.h
index 0ca5a73..8a67fb1 100644
--- a/include/c99_math.h
+++ b/include/c99_math.h
@@ -146,6 +146,12 @@ exp2f(float f)
    return powf(2.0f, f);
 }
 
+static inline double
+exp2(double d)
+{
+   return pow(2.0, d);
+}
+
 #endif /* C99 */