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Viewing changes to Lib/lib/lapack/info.py

  • Committer: Bazaar Package Importer
  • Author(s): Matthias Klose
  • Date: 2007-01-07 14:12:12 UTC
  • mfrom: (1.1.1 upstream)
  • Revision ID: james.westby@ubuntu.com-20070107141212-mm0ebkh5b37hcpzn
http://bugs.debian.org/402783
* Remove build dependency on python-numpy-dev.
* python-scipy: Depend on python-numpy instead of python-numpy-dev.
* Package builds on other archs than i386. Closes: #402783.

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Lib/lib/lapack/info.py
 
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"""
 
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Wrappers to LAPACK library
 
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==========================
 
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  flapack -- wrappers for Fortran [*] LAPACK routines
 
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  clapack -- wrappers for ATLAS LAPACK routines
 
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  calc_lwork -- calculate optimal lwork parameters
 
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  get_lapack_funcs -- query for wrapper functions.
 
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[*] If ATLAS libraries are available then Fortran routines
 
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    actually use ATLAS routines and should perform equally
 
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    well to ATLAS routines.
 
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Module flapack
 
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++++++++++++++
 
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In the following all function names are shown without
 
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type prefix (s,d,c,z). Optimal values for lwork can
 
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be computed using calc_lwork module.
 
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Linear Equations
 
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----------------
 
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  Drivers::
 
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    lu,piv,x,info = gesv(a,b,overwrite_a=0,overwrite_b=0)
 
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    lub,piv,x,info = gbsv(kl,ku,ab,b,overwrite_ab=0,overwrite_b=0)
 
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    c,x,info = posv(a,b,lower=0,overwrite_a=0,overwrite_b=0)
 
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  Computational routines::
 
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    lu,piv,info = getrf(a,overwrite_a=0)
 
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    x,info = getrs(lu,piv,b,trans=0,overwrite_b=0)
 
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    inv_a,info = getri(lu,piv,lwork=min_lwork,overwrite_lu=0)
 
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    c,info = potrf(a,lower=0,clean=1,overwrite_a=0)
 
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    x,info = potrs(c,b,lower=0,overwrite_b=0)
 
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    inv_a,info = potri(c,lower=0,overwrite_c=0)
 
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    inv_c,info = trtri(c,lower=0,unitdiag=0,overwrite_c=0)
 
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Linear Least Squares (LLS) Problems
 
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-----------------------------------
 
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  Drivers::
 
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    v,x,s,rank,info = gelss(a,b,cond=-1.0,lwork=min_lwork,overwrite_a=0,overwrite_b=0)
 
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  Computational routines::
 
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    qr,tau,info = geqrf(a,lwork=min_lwork,overwrite_a=0)
 
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    q,info = orgqr|ungqr(qr,tau,lwork=min_lwork,overwrite_qr=0,overwrite_tau=1)
 
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Generalized Linear Least Squares (LSE and GLM) Problems
 
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-------------------------------------------------------
 
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Standard Eigenvalue and Singular Value Problems
 
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-----------------------------------------------
 
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  Drivers::
 
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    w,v,info = syev|heev(a,compute_v=1,lower=0,lwork=min_lwork,overwrite_a=0)
 
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    w,v,info = syevd|heevd(a,compute_v=1,lower=0,lwork=min_lwork,overwrite_a=0)
 
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    w,v,info = syevr|heevr(a,compute_v=1,lower=0,vrange=,irange=,atol=-1.0,lwork=min_lwork,overwrite_a=0)
 
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    t,sdim,(wr,wi|w),vs,info = gees(select,a,compute_v=1,sort_t=0,lwork=min_lwork,select_extra_args=(),overwrite_a=0)
 
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    wr,(wi,vl|w),vr,info = geev(a,compute_vl=1,compute_vr=1,lwork=min_lwork,overwrite_a=0)
 
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    u,s,vt,info = gesdd(a,compute_uv=1,lwork=min_lwork,overwrite_a=0)
 
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  Computational routines::
 
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    ht,tau,info = gehrd(a,lo=0,hi=n-1,lwork=min_lwork,overwrite_a=0)
 
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    ba,lo,hi,pivscale,info = gebal(a,scale=0,permute=0,overwrite_a=0)
 
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Generalized Eigenvalue and Singular Value Problems
 
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--------------------------------------------------
 
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  Drivers::
 
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    w,v,info = sygv|hegv(a,b,itype=1,compute_v=1,lower=0,lwork=min_lwork,overwrite_a=0,overwrite_b=0)
 
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    w,v,info = sygvd|hegvd(a,b,itype=1,compute_v=1,lower=0,lwork=min_lwork,overwrite_a=0,overwrite_b=0)
 
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    (alphar,alphai|alpha),beta,vl,vr,info = ggev(a,b,compute_vl=1,compute_vr=1,lwork=min_lwork,overwrite_a=0,overwrite_b=0)
 
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Auxiliary routines
 
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------------------
 
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  a,info = lauum(c,lower=0,overwrite_c=0)
 
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  a = laswp(a,piv,k1=0,k2=len(piv)-1,off=0,inc=1,overwrite_a=0)
 
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Module clapack
 
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++++++++++++++
 
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Linear Equations
 
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----------------
 
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  Drivers::
 
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    lu,piv,x,info = gesv(a,b,rowmajor=1,overwrite_a=0,overwrite_b=0)
 
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    c,x,info = posv(a,b,lower=0,rowmajor=1,overwrite_a=0,overwrite_b=0)
 
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  Computational routines::
 
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    lu,piv,info = getrf(a,rowmajor=1,overwrite_a=0)
 
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    x,info = getrs(lu,piv,b,trans=0,rowmajor=1,overwrite_b=0)
 
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    inv_a,info = getri(lu,piv,rowmajor=1,overwrite_lu=0)
 
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    c,info = potrf(a,lower=0,clean=1,rowmajor=1,overwrite_a=0)
 
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    x,info = potrs(c,b,lower=0,rowmajor=1,overwrite_b=0)
 
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    inv_a,info = potri(c,lower=0,rowmajor=1,overwrite_c=0)
 
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    inv_c,info = trtri(c,lower=0,unitdiag=0,rowmajor=1,overwrite_c=0)
 
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Auxiliary routines
 
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------------------
 
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  a,info = lauum(c,lower=0,rowmajor=1,overwrite_c=0)
 
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Module calc_lwork
 
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+++++++++++++++++
 
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Optimal lwork is maxwrk. Default is minwrk.
 
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  minwrk,maxwrk = gehrd(prefix,n,lo=0,hi=n-1)
 
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  minwrk,maxwrk = gesdd(prefix,m,n,compute_uv=1)
 
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  minwrk,maxwrk = gelss(prefix,m,n,nrhs)
 
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  minwrk,maxwrk = getri(prefix,n)
 
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  minwrk,maxwrk = geev(prefix,n,compute_vl=1,compute_vr=1)
 
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  minwrk,maxwrk = heev(prefix,n,lower=0)
 
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  minwrk,maxwrk = syev(prefix,n,lower=0)
 
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  minwrk,maxwrk = gees(prefix,n,compute_v=1)
 
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  minwrk,maxwrk = geqrf(prefix,m,n)
 
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  minwrk,maxwrk = gqr(prefix,m,n)
 
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"""
 
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postpone_import = 1