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LAPACK 3.3.0
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LAPACK 3.3.0
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00001 SUBROUTINE SCHKEC( THRESH, TSTERR, NIN, NOUT ) 00002 * 00003 * -- LAPACK test routine (version 3.1) -- 00004 * Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. 00005 * November 2006 00006 * 00007 * .. Scalar Arguments .. 00008 LOGICAL TSTERR 00009 INTEGER NIN, NOUT 00010 REAL THRESH 00011 * .. 00012 * 00013 * Purpose 00014 * ======= 00015 * 00016 * SCHKEC tests eigen- condition estimation routines 00017 * SLALN2, SLASY2, SLANV2, SLAQTR, SLAEXC, 00018 * STRSYL, STREXC, STRSNA, STRSEN 00019 * 00020 * In all cases, the routine runs through a fixed set of numerical 00021 * examples, subjects them to various tests, and compares the test 00022 * results to a threshold THRESH. In addition, STREXC, STRSNA and STRSEN 00023 * are tested by reading in precomputed examples from a file (on input 00024 * unit NIN). Output is written to output unit NOUT. 00025 * 00026 * Arguments 00027 * ========= 00028 * 00029 * THRESH (input) REAL 00030 * Threshold for residual tests. A computed test ratio passes 00031 * the threshold if it is less than THRESH. 00032 * 00033 * TSTERR (input) LOGICAL 00034 * Flag that indicates whether error exits are to be tested. 00035 * 00036 * NIN (input) INTEGER 00037 * The logical unit number for input. 00038 * 00039 * NOUT (input) INTEGER 00040 * The logical unit number for output. 00041 * 00042 * ===================================================================== 00043 * 00044 * .. Local Scalars .. 00045 LOGICAL OK 00046 CHARACTER*3 PATH 00047 INTEGER KLAEXC, KLALN2, KLANV2, KLAQTR, KLASY2, KTREXC, 00048 $ KTRSEN, KTRSNA, KTRSYL, LLAEXC, LLALN2, LLANV2, 00049 $ LLAQTR, LLASY2, LTREXC, LTRSYL, NLANV2, NLAQTR, 00050 $ NLASY2, NTESTS, NTRSYL 00051 REAL EPS, RLAEXC, RLALN2, RLANV2, RLAQTR, RLASY2, 00052 $ RTREXC, RTRSYL, SFMIN 00053 * .. 00054 * .. Local Arrays .. 00055 INTEGER LTRSEN( 3 ), LTRSNA( 3 ), NLAEXC( 2 ), 00056 $ NLALN2( 2 ), NTREXC( 3 ), NTRSEN( 3 ), 00057 $ NTRSNA( 3 ) 00058 REAL RTRSEN( 3 ), RTRSNA( 3 ) 00059 * .. 00060 * .. External Subroutines .. 00061 EXTERNAL SERREC, SGET31, SGET32, SGET33, SGET34, SGET35, 00062 $ SGET36, SGET37, SGET38, SGET39 00063 * .. 00064 * .. External Functions .. 00065 REAL SLAMCH 00066 EXTERNAL SLAMCH 00067 * .. 00068 * .. Executable Statements .. 00069 * 00070 PATH( 1: 1 ) = 'Single precision' 00071 PATH( 2: 3 ) = 'EC' 00072 EPS = SLAMCH( 'P' ) 00073 SFMIN = SLAMCH( 'S' ) 00074 * 00075 * Print header information 00076 * 00077 WRITE( NOUT, FMT = 9989 ) 00078 WRITE( NOUT, FMT = 9988 )EPS, SFMIN 00079 WRITE( NOUT, FMT = 9987 )THRESH 00080 * 00081 * Test error exits if TSTERR is .TRUE. 00082 * 00083 IF( TSTERR ) 00084 $ CALL SERREC( PATH, NOUT ) 00085 * 00086 OK = .TRUE. 00087 CALL SGET31( RLALN2, LLALN2, NLALN2, KLALN2 ) 00088 IF( RLALN2.GT.THRESH .OR. NLALN2( 1 ).NE.0 ) THEN 00089 OK = .FALSE. 00090 WRITE( NOUT, FMT = 9999 )RLALN2, LLALN2, NLALN2, KLALN2 00091 END IF 00092 * 00093 CALL SGET32( RLASY2, LLASY2, NLASY2, KLASY2 ) 00094 IF( RLASY2.GT.THRESH ) THEN 00095 OK = .FALSE. 00096 WRITE( NOUT, FMT = 9998 )RLASY2, LLASY2, NLASY2, KLASY2 00097 END IF 00098 * 00099 CALL SGET33( RLANV2, LLANV2, NLANV2, KLANV2 ) 00100 IF( RLANV2.GT.THRESH .OR. NLANV2.NE.0 ) THEN 00101 OK = .FALSE. 00102 WRITE( NOUT, FMT = 9997 )RLANV2, LLANV2, NLANV2, KLANV2 00103 END IF 00104 * 00105 CALL SGET34( RLAEXC, LLAEXC, NLAEXC, KLAEXC ) 00106 IF( RLAEXC.GT.THRESH .OR. NLAEXC( 2 ).NE.0 ) THEN 00107 OK = .FALSE. 00108 WRITE( NOUT, FMT = 9996 )RLAEXC, LLAEXC, NLAEXC, KLAEXC 00109 END IF 00110 * 00111 CALL SGET35( RTRSYL, LTRSYL, NTRSYL, KTRSYL ) 00112 IF( RTRSYL.GT.THRESH ) THEN 00113 OK = .FALSE. 00114 WRITE( NOUT, FMT = 9995 )RTRSYL, LTRSYL, NTRSYL, KTRSYL 00115 END IF 00116 * 00117 CALL SGET36( RTREXC, LTREXC, NTREXC, KTREXC, NIN ) 00118 IF( RTREXC.GT.THRESH .OR. NTREXC( 3 ).GT.0 ) THEN 00119 OK = .FALSE. 00120 WRITE( NOUT, FMT = 9994 )RTREXC, LTREXC, NTREXC, KTREXC 00121 END IF 00122 * 00123 CALL SGET37( RTRSNA, LTRSNA, NTRSNA, KTRSNA, NIN ) 00124 IF( RTRSNA( 1 ).GT.THRESH .OR. RTRSNA( 2 ).GT.THRESH .OR. 00125 $ NTRSNA( 1 ).NE.0 .OR. NTRSNA( 2 ).NE.0 .OR. NTRSNA( 3 ).NE.0 ) 00126 $ THEN 00127 OK = .FALSE. 00128 WRITE( NOUT, FMT = 9993 )RTRSNA, LTRSNA, NTRSNA, KTRSNA 00129 END IF 00130 * 00131 CALL SGET38( RTRSEN, LTRSEN, NTRSEN, KTRSEN, NIN ) 00132 IF( RTRSEN( 1 ).GT.THRESH .OR. RTRSEN( 2 ).GT.THRESH .OR. 00133 $ NTRSEN( 1 ).NE.0 .OR. NTRSEN( 2 ).NE.0 .OR. NTRSEN( 3 ).NE.0 ) 00134 $ THEN 00135 OK = .FALSE. 00136 WRITE( NOUT, FMT = 9992 )RTRSEN, LTRSEN, NTRSEN, KTRSEN 00137 END IF 00138 * 00139 CALL SGET39( RLAQTR, LLAQTR, NLAQTR, KLAQTR ) 00140 IF( RLAQTR.GT.THRESH ) THEN 00141 OK = .FALSE. 00142 WRITE( NOUT, FMT = 9991 )RLAQTR, LLAQTR, NLAQTR, KLAQTR 00143 END IF 00144 * 00145 NTESTS = KLALN2 + KLASY2 + KLANV2 + KLAEXC + KTRSYL + KTREXC + 00146 $ KTRSNA + KTRSEN + KLAQTR 00147 IF( OK ) 00148 $ WRITE( NOUT, FMT = 9990 )PATH, NTESTS 00149 * 00150 RETURN 00151 9999 FORMAT( ' Error in SLALN2: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00152 $ 'INFO=', 2I8, ' KNT=', I8 ) 00153 9998 FORMAT( ' Error in SLASY2: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00154 $ 'INFO=', I8, ' KNT=', I8 ) 00155 9997 FORMAT( ' Error in SLANV2: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00156 $ 'INFO=', I8, ' KNT=', I8 ) 00157 9996 FORMAT( ' Error in SLAEXC: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00158 $ 'INFO=', 2I8, ' KNT=', I8 ) 00159 9995 FORMAT( ' Error in STRSYL: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00160 $ 'INFO=', I8, ' KNT=', I8 ) 00161 9994 FORMAT( ' Error in STREXC: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00162 $ 'INFO=', 3I8, ' KNT=', I8 ) 00163 9993 FORMAT( ' Error in STRSNA: RMAX =', 3E12.3, / ' LMAX = ', 3I8, 00164 $ ' NINFO=', 3I8, ' KNT=', I8 ) 00165 9992 FORMAT( ' Error in STRSEN: RMAX =', 3E12.3, / ' LMAX = ', 3I8, 00166 $ ' NINFO=', 3I8, ' KNT=', I8 ) 00167 9991 FORMAT( ' Error in SLAQTR: RMAX =', E12.3, / ' LMAX = ', I8, ' N', 00168 $ 'INFO=', I8, ' KNT=', I8 ) 00169 9990 FORMAT( / 1X, 'All tests for ', A3, ' routines passed the thresh', 00170 $ 'old (', I6, ' tests run)' ) 00171 9989 FORMAT( ' Tests of the Nonsymmetric eigenproblem condition estim', 00172 $ 'ation routines', / ' SLALN2, SLASY2, SLANV2, SLAEXC, STRS', 00173 $ 'YL, STREXC, STRSNA, STRSEN, SLAQTR', / ) 00174 9988 FORMAT( ' Relative machine precision (EPS) = ', E16.6, / ' Safe ', 00175 $ 'minimum (SFMIN) = ', E16.6, / ) 00176 9987 FORMAT( ' Routines pass computational tests if test ratio is les', 00177 $ 's than', F8.2, / / ) 00178 * 00179 * End of SCHKEC 00180 * 00181 END
1.7.3 
