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--- libsee/dtoa.c.orig 2009-04-26 21:04:58 UTC
+++ libsee/dtoa.c
@@ -252,6 +252,14 @@ static double private_mem[PRIVATE_mem],
#include "math.h"
#endif
+#include <pthread.h>
+
+static pthread_mutex_t dtoaLock[2] = { PTHREAD_MUTEX_INITIALIZER, PTHREAD_MUTEX_INITIALIZER };
+
+#define MULTIPLE_THREADS
+#define ACQUIRE_DTOA_LOCK(n) pthread_mutex_lock(&dtoaLock[n]);
+#define FREE_DTOA_LOCK(n) pthread_mutex_unlock(&dtoaLock[n]);
+
#ifdef __cplusplus
extern "C" {
#endif
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