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/usr/include/ITK-4.5/lapack/double/dsptrf.h is in libinsighttoolkit4-dev 4.5.0-3.

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extern int v3p_netlib_dsptrf_(
  char *uplo, 
  v3p_netlib_integer *n, 
  v3p_netlib_doublereal *ap, 
  v3p_netlib_integer *ipiv, 
  v3p_netlib_integer *info, 
  v3p_netlib_ftnlen uplo_len
  );