[UNIKRAFT/LIB-MUSL PATCH] math: Provide constants to Unikraft

[Alexander Jung <a.jung@xxxxxxxxxxx>]

This patch modifes the math library to provide Mathematical constants
such as Pi and e in the header <math.h>.

Signed-off-by: Alexander Jung <a.jung@xxxxxxxxxxx>
---
 .../0008-math-Provide-constants-to-Unikraft.patch  | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 patches/0008-math-Provide-constants-to-Unikraft.patch

diff --git a/patches/0008-math-Provide-constants-to-Unikraft.patch 
b/patches/0008-math-Provide-constants-to-Unikraft.patch
new file mode 100644
index 0000000..ba7282e
--- /dev/null
+++ b/patches/0008-math-Provide-constants-to-Unikraft.patch
@@ -0,0 +1,29 @@
+From 4f1964346aad513869a1543868847ade767130e2 Mon Sep 17 00:00:00 2001
+From: Alexander Jung <alexander.jung@xxxxxxxxx>
+Date: Mon, 29 Jun 2020 20:51:34 +0200
+Subject: [PATCH] math: Provide constants to Unikraft
+
+This patch modifes the math library to provide Mathematical constants
+such as Pi and e in the header <math.h>.
+
+Signed-off-by: Alexander Jung <alexander.jung@xxxxxxxxx>
+---
+ include/math.h | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/include/math.h b/include/math.h
+index 6ac91da..d95e06d 100644
+--- a/include/math.h
++++ b/include/math.h
+@@ -354,7 +354,7 @@ long double truncl(long double);
+ #define MAXFLOAT        3.40282346638528859812e+38F
+ #endif
+ 
+-#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE) || defined(_BSD_SOURCE)
++#if defined(__Unikraft__)
+ #define M_E             2.7182818284590452354   /* e */
+ #define M_LOG2E         1.4426950408889634074   /* log_2 e */
+ #define M_LOG10E        0.43429448190325182765  /* log_10 e */
+-- 
+2.20.1
+
-- 
2.11.0