TESTING/EIG/sget38.f(3)

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TESTING/EIG/sget38.f(3) 🦋

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✨ NAME ✨

TESTING/EIG/sget38.f

✨ SYNOPSIS ✨

✨ Functions/Subroutines ✨

   subroutine sget38 (rmax, lmax, ninfo, knt, nin)
       SGET38

✨ Function/Subroutine Documentation ✨

   subroutine sget38 (real, dimension( 3 ) rmax, integer, dimension( 3 ) lmax,
       integer, dimension( 3 ) ninfo, integer knt, integer nin)

SGET38 💖

✨ Purpose ✨

SGET38 tests STRSEN, a routine for estimating condition numbers of a cluster of eigenvalues and/or its associated right invariant subspace.

The test matrices are read from a file with logical unit number NIN.

✨ Parameters ✨

  • RMAX — RMAX is REAL array, dimension (3). Values of the largest test ratios.
    • RMAX(1) = largest residuals from SHST01 or comparing different calls to STRSEN
    • RMAX(2) = largest error in reciprocal condition numbers taking their conditioning into account
    • RMAX(3) = largest error in reciprocal condition numbers not taking their conditioning into account (may be larger than RMAX(2))
  • LMAX — LMAX is INTEGER array, dimension (3). LMAX(i) is example number where largest test ratio RMAX(i) is achieved. Also:
    • If SGEHRD returns INFO nonzero on example i, LMAX(1)=i
    • If SHSEQR returns INFO nonzero on example i, LMAX(2)=i
    • If STRSEN returns INFO nonzero on example i, LMAX(3)=i
  • NINFO — NINFO is INTEGER array, dimension (3).
    • NINFO(1) = No. of times SGEHRD returned INFO nonzero
    • NINFO(2) = No. of times SHSEQR returned INFO nonzero
    • NINFO(3) = No. of times STRSEN returned INFO nonzero
  • KNT — KNT is INTEGER. Total number of examples tested.
  • NIN — NIN is INTEGER. Input logical unit number.

✨ Author ✨

  • Univ. of Tennessee
  • Univ. of California Berkeley
  • Univ. of Colorado Denver
  • NAG Ltd.

Definition at line 90 of file sget38.f.

✨ Author ✨

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