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-rw-r--r--src/include/math_func.h14
1 files changed, 13 insertions, 1 deletions
diff --git a/src/include/math_func.h b/src/include/math_func.h
index c44075d..b3bbe7b 100644
--- a/src/include/math_func.h
+++ b/src/include/math_func.h
@@ -7,7 +7,19 @@
#define math_func_h
#include <math.h>
-#include "config.h"
+#include "blip-config.h"
+
+#ifndef M_PI
+# define M_PI 3.14159265358979323846 /* pi */
+#endif
+
+#ifndef M_LN10
+# define M_LN10 2.30258509299404568402 /* log_e(10) */
+#endif
+
+#ifndef M_LN2
+# define M_LN2 0.69314718055994530942 /* log_e(2) */
+#endif
#ifdef HAVE_SINF
/* Use float functions */