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-rw-r--r--externals/vanilla/e_sqrt.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/externals/vanilla/e_sqrt.h b/externals/vanilla/e_sqrt.h
index 29f9725c..209ef02f 100644
--- a/externals/vanilla/e_sqrt.h
+++ b/externals/vanilla/e_sqrt.h
@@ -5,6 +5,7 @@
/* these are things used in a number of objectclasses from e_sqrt.c */
#include "m_pd.h"
+#include <math.h>
#define LOGTEN 2.302585092994
#define DUMTAB1SIZE 256