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diff --git a/include/gensvm_lapack.h b/include/gensvm_lapack.h
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+/**
+ * @file gensvm_lapack.h
+ * @author Gertjan van den Burg
+ * @date August, 2013
+ * @brief Header file for gensvm_lapack.c
+ *
+ * @details
+ * Function declarations for external LAPACK functions
+ *
+ */
+
+#ifndef GENSVM_LAPACK_H
+#define GENSVM_LAPACK_H
+
+#include "globals.h"
+
+int dposv(char UPLO, int N, int NRHS, double *A, int LDA, double *B,
+ int LDB);
+int dsysv(char UPLO, int N, int NRHS, double *A, int LDA, int *IPIV,
+ double *B, int LDB, double *WORK, int LWORK);
+int dsyevx(char JOBZ, char RANGE, char UPLO, int N, double *A, int LDA,
+ double VL, double VU, int IL, int IU, double ABSTOL,
+ int *M, double *W, double *Z, int LDZ, double *WORK, int LWORK,
+ int *IWORK, int *IFAIL);
+double dlamch(char CMACH);
+#endif