LAPACK
3.7.1
LAPACK: Linear Algebra PACKage

void LAPACK_dsyevx_2stage  (  char *  jobz, 
char *  range,  
char *  uplo,  
lapack_int *  n,  
double *  a,  
lapack_int *  lda,  
double *  vl,  
double *  vu,  
lapack_int *  il,  
lapack_int *  iu,  
double *  abstol,  
lapack_int *  m,  
double *  w,  
double *  z,  
lapack_int *  ldz,  
double *  work,  
lapack_int *  lwork,  
lapack_int *  iwork,  
lapack_int *  ifail,  
lapack_int *  info  
) 