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LAPACK
3.4.1
LAPACK: Linear Algebra PACKage
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00001 *> \brief \b SCHKEC 00002 * 00003 * =========== DOCUMENTATION =========== 00004 * 00005 * Online html documentation available at 00006 * http://www.netlib.org/lapack/explore-html/ 00007 * 00008 * Definition: 00009 * =========== 00010 * 00011 * SUBROUTINE SCHKEC( THRESH, TSTERR, NIN, NOUT ) 00012 * 00013 * .. Scalar Arguments .. 00014 * LOGICAL TSTERR 00015 * INTEGER NIN, NOUT 00016 * REAL THRESH 00017 * .. 00018 * 00019 * 00020 *> \par Purpose: 00021 * ============= 00022 *> 00023 *> \verbatim 00024 *> 00025 *> SCHKEC tests eigen- condition estimation routines 00026 *> SLALN2, SLASY2, SLANV2, SLAQTR, SLAEXC, 00027 *> STRSYL, STREXC, STRSNA, STRSEN 00028 *> 00029 *> In all cases, the routine runs through a fixed set of numerical 00030 *> examples, subjects them to various tests, and compares the test 00031 *> results to a threshold THRESH. In addition, STREXC, STRSNA and STRSEN 00032 *> are tested by reading in precomputed examples from a file (on input 00033 *> unit NIN). Output is written to output unit NOUT. 00034 *> \endverbatim 00035 * 00036 * Arguments: 00037 * ========== 00038 * 00039 *> \param[in] THRESH 00040 *> \verbatim 00041 *> THRESH is REAL 00042 *> Threshold for residual tests. A computed test ratio passes 00043 *> the threshold if it is less than THRESH. 00044 *> \endverbatim 00045 *> 00046 *> \param[in] TSTERR 00047 *> \verbatim 00048 *> TSTERR is LOGICAL 00049 *> Flag that indicates whether error exits are to be tested. 00050 *> \endverbatim 00051 *> 00052 *> \param[in] NIN 00053 *> \verbatim 00054 *> NIN is INTEGER 00055 *> The logical unit number for input. 00056 *> \endverbatim 00057 *> 00058 *> \param[in] NOUT 00059 *> \verbatim 00060 *> NOUT is INTEGER 00061 *> The logical unit number for output. 00062 *> \endverbatim 00063 * 00064 * Authors: 00065 * ======== 00066 * 00067 *> \author Univ. of Tennessee 00068 *> \author Univ. of California Berkeley 00069 *> \author Univ. of Colorado Denver 00070 *> \author NAG Ltd. 00071 * 00072 *> \date November 2011 00073 * 00074 *> \ingroup single_eig 00075 * 00076 * ===================================================================== 00077 SUBROUTINE SCHKEC( THRESH, TSTERR, NIN, NOUT ) 00078 * 00079 * -- LAPACK test routine (version 3.4.0) -- 00080 * -- LAPACK is a software package provided by Univ. of Tennessee, -- 00081 * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- 00082 * November 2011 00083 * 00084 * .. Scalar Arguments .. 00085 LOGICAL TSTERR 00086 INTEGER NIN, NOUT 00087 REAL THRESH 00088 * .. 00089 * 00090 * ===================================================================== 00091 * 00092 * .. Local Scalars .. 00093 LOGICAL OK 00094 CHARACTER*3 PATH 00095 INTEGER KLAEXC, KLALN2, KLANV2, KLAQTR, KLASY2, KTREXC, 00096 $ KTRSEN, KTRSNA, KTRSYL, LLAEXC, LLALN2, LLANV2, 00097 $ LLAQTR, LLASY2, LTREXC, LTRSYL, NLANV2, NLAQTR, 00098 $ NLASY2, NTESTS, NTRSYL 00099 REAL EPS, RLAEXC, RLALN2, RLANV2, RLAQTR, RLASY2, 00100 $ RTREXC, RTRSYL, SFMIN 00101 * .. 00102 * .. Local Arrays .. 00103 INTEGER LTRSEN( 3 ), LTRSNA( 3 ), NLAEXC( 2 ), 00104 $ NLALN2( 2 ), NTREXC( 3 ), NTRSEN( 3 ), 00105 $ NTRSNA( 3 ) 00106 REAL RTRSEN( 3 ), RTRSNA( 3 ) 00107 * .. 00108 * .. External Subroutines .. 00109 EXTERNAL SERREC, SGET31, SGET32, SGET33, SGET34, SGET35, 00110 $ SGET36, SGET37, SGET38, SGET39 00111 * .. 00112 * .. External Functions .. 00113 REAL SLAMCH 00114 EXTERNAL SLAMCH 00115 * .. 00116 * .. Executable Statements .. 00117 * 00118 PATH( 1: 1 ) = 'Single precision' 00119 PATH( 2: 3 ) = 'EC' 00120 EPS = SLAMCH( 'P' ) 00121 SFMIN = SLAMCH( 'S' ) 00122 * 00123 * Print header information 00124 * 00125 WRITE( NOUT, FMT = 9989 ) 00126 WRITE( NOUT, FMT = 9988 )EPS, SFMIN 00127 WRITE( NOUT, FMT = 9987 )THRESH 00128 * 00129 * Test error exits if TSTERR is .TRUE. 00130 * 00131 IF( TSTERR ) 00132 $ CALL SERREC( PATH, NOUT ) 00133 * 00134 OK = .TRUE. 00135 CALL SGET31( RLALN2, LLALN2, NLALN2, KLALN2 ) 00136 IF( RLALN2.GT.THRESH .OR. NLALN2( 1 ).NE.0 ) THEN 00137 OK = .FALSE. 00138 WRITE( NOUT, FMT = 9999 )RLALN2, LLALN2, NLALN2, KLALN2 00139 END IF 00140 * 00141 CALL SGET32( RLASY2, LLASY2, NLASY2, KLASY2 ) 00142 IF( RLASY2.GT.THRESH ) THEN 00143 OK = .FALSE. 00144 WRITE( NOUT, FMT = 9998 )RLASY2, LLASY2, NLASY2, KLASY2 00145 END IF 00146 * 00147 CALL SGET33( RLANV2, LLANV2, NLANV2, KLANV2 ) 00148 IF( RLANV2.GT.THRESH .OR. NLANV2.NE.0 ) THEN 00149 OK = .FALSE. 00150 WRITE( NOUT, FMT = 9997 )RLANV2, LLANV2, NLANV2, KLANV2 00151 END IF 00152 * 00153 CALL SGET34( RLAEXC, LLAEXC, NLAEXC, KLAEXC ) 00154 IF( RLAEXC.GT.THRESH .OR. NLAEXC( 2 ).NE.0 ) THEN 00155 OK = .FALSE. 00156 WRITE( NOUT, FMT = 9996 )RLAEXC, LLAEXC, NLAEXC, KLAEXC 00157 END IF 00158 * 00159 CALL SGET35( RTRSYL, LTRSYL, NTRSYL, KTRSYL ) 00160 IF( RTRSYL.GT.THRESH ) THEN 00161 OK = .FALSE. 00162 WRITE( NOUT, FMT = 9995 )RTRSYL, LTRSYL, NTRSYL, KTRSYL 00163 END IF 00164 * 00165 CALL SGET36( RTREXC, LTREXC, NTREXC, KTREXC, NIN ) 00166 IF( RTREXC.GT.THRESH .OR. NTREXC( 3 ).GT.0 ) THEN 00167 OK = .FALSE. 00168 WRITE( NOUT, FMT = 9994 )RTREXC, LTREXC, NTREXC, KTREXC 00169 END IF 00170 * 00171 CALL SGET37( RTRSNA, LTRSNA, NTRSNA, KTRSNA, NIN ) 00172 IF( RTRSNA( 1 ).GT.THRESH .OR. RTRSNA( 2 ).GT.THRESH .OR. 00173 $ NTRSNA( 1 ).NE.0 .OR. NTRSNA( 2 ).NE.0 .OR. NTRSNA( 3 ).NE.0 ) 00174 $ THEN 00175 OK = .FALSE. 00176 WRITE( NOUT, FMT = 9993 )RTRSNA, LTRSNA, NTRSNA, KTRSNA 00177 END IF 00178 * 00179 CALL SGET38( RTRSEN, LTRSEN, NTRSEN, KTRSEN, NIN ) 00180 IF( RTRSEN( 1 ).GT.THRESH .OR. RTRSEN( 2 ).GT.THRESH .OR. 00181 $ NTRSEN( 1 ).NE.0 .OR. NTRSEN( 2 ).NE.0 .OR. NTRSEN( 3 ).NE.0 ) 00182 $ THEN 00183 OK = .FALSE. 00184 WRITE( NOUT, FMT = 9992 )RTRSEN, LTRSEN, NTRSEN, KTRSEN 00185 END IF 00186 * 00187 CALL SGET39( RLAQTR, LLAQTR, NLAQTR, KLAQTR ) 00188 IF( RLAQTR.GT.THRESH ) THEN 00189 OK = .FALSE. 00190 WRITE( NOUT, FMT = 9991 )RLAQTR, LLAQTR, NLAQTR, KLAQTR 00191 END IF 00192 * 00193 NTESTS = KLALN2 + KLASY2 + KLANV2 + KLAEXC + KTRSYL + KTREXC + 00194 $ KTRSNA + KTRSEN + KLAQTR 00195 IF( OK ) 00196 $ WRITE( NOUT, FMT = 9990 )PATH, NTESTS 00197 * 00198 RETURN 00199 9999 FORMAT( ' Error in SLALN2: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00200 $ 'INFO=', 2I8, ' KNT=', I8 ) 00201 9998 FORMAT( ' Error in SLASY2: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00202 $ 'INFO=', I8, ' KNT=', I8 ) 00203 9997 FORMAT( ' Error in SLANV2: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00204 $ 'INFO=', I8, ' KNT=', I8 ) 00205 9996 FORMAT( ' Error in SLAEXC: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00206 $ 'INFO=', 2I8, ' KNT=', I8 ) 00207 9995 FORMAT( ' Error in STRSYL: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00208 $ 'INFO=', I8, ' KNT=', I8 ) 00209 9994 FORMAT( ' Error in STREXC: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00210 $ 'INFO=', 3I8, ' KNT=', I8 ) 00211 9993 FORMAT( ' Error in STRSNA: RMAX =', 3E12.3, / ' LMAX = ', 3I8, 00212 $ ' NINFO=', 3I8, ' KNT=', I8 ) 00213 9992 FORMAT( ' Error in STRSEN: RMAX =', 3E12.3, / ' LMAX = ', 3I8, 00214 $ ' NINFO=', 3I8, ' KNT=', I8 ) 00215 9991 FORMAT( ' Error in SLAQTR: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00216 $ 'INFO=', I8, ' KNT=', I8 ) 00217 9990 FORMAT( / 1X, 'All tests for ', A3, ' routines passed the thresh', 00218 $ 'old ( ', I6, ' tests run)' ) 00219 9989 FORMAT( ' Tests of the Nonsymmetric eigenproblem condition estim', 00220 $ 'ation routines', / ' SLALN2, SLASY2, SLANV2, SLAEXC, STRS', 00221 $ 'YL, STREXC, STRSNA, STRSEN, SLAQTR', / ) 00222 9988 FORMAT( ' Relative machine precision (EPS) = ', E16.6, / ' Safe ', 00223 $ 'minimum (SFMIN) = ', E16.6, / ) 00224 9987 FORMAT( ' Routines pass computational tests if test ratio is les', 00225 $ 's than', F8.2, / / ) 00226 * 00227 * End of SCHKEC 00228 * 00229 END