LAPACK
3.7.1
LAPACK: Linear Algebra PACKage

void LAPACK_zupgtr  (  char *  uplo, 
lapack_int *  n,  
const lapack_complex_double *  ap,  
const lapack_complex_double *  tau,  
lapack_complex_double *  q,  
lapack_int *  ldq,  
lapack_complex_double *  work,  
lapack_int *  info  
) 