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-rw-r--r--src/trumpet.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/src/trumpet.c b/src/trumpet.c
index 40ce181..4421cf6 100644
--- a/src/trumpet.c
+++ b/src/trumpet.c
@@ -13,6 +13,13 @@
#define MAX(x,y) (x) > (y) ? (x) : (y)
#define SQR(x) ((x)*(x))
+#ifndef M_SQRT2
+#define M_SQRT2 1.4142135623730951
+#endif
+#ifndef M_SQRT1_2
+#define M_SQRT1_2 0.7071067811865476
+#endif
+
#define MASS 1
/*
* the constant C from e.g. 0908.1063v4