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C LSAME     SOURCE    CHAT      05/01/13    01:25:23     5004      FUNCTION LSAME( CA, CB )      IMPLICIT INTEGER(I-N)      IMPLICIT REAL*8 (A-H,O-Z)**  -- LAPACK auxiliary routine (version 2.0) --*     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,*     Courant Institute, Argonne National Lab, and Rice University*     January 31, 1994*     Modified on 16/2/98 :  commented INTRINSIC (not esope compatible)**     .. Scalar Result ..      LOGICAL LSAME*     .. Scalar Arguments ..      CHARACTER*1     CA, CB*     ..**  Purpose*  =======**  LSAME returns .TRUE. if CA is the same letter as CB regardless of*  case.**  Arguments*  =========**  CA      (input) CHARACTER*1*  CB      (input) CHARACTER*1*          CA and CB specify the single characters to be compared.** =====================================================================**     .. Intrinsic Functions ..*      INTRINSIC          ICHAR*     ..*     .. Local Scalars ..      INTEGER            INTA, INTB, ZCODE*     ..*     .. Executable Statements ..**     Test if the characters are equal*      LSAME = CA.EQ.CB      IF( LSAME )     $RETURN** Now test for equivalence if both characters are alphabetic.* ZCODE = ICHAR( 'Z' )** Use 'Z' rather than 'A' so that ASCII can be detected on Prime* machines, on which ICHAR returns a value with bit 8 set.* ICHAR('A') on Prime machines returns 193 which is the same as* ICHAR('A') on an EBCDIC machine.* INTA = ICHAR( CA ) INTB = ICHAR( CB )* IF( ZCODE.EQ.90 .OR. ZCODE.EQ.122 ) THEN** ASCII is assumed - ZCODE is the ASCII code of either lower or* upper case 'Z'.* IF( INTA.GE.97 .AND. INTA.LE.122 ) INTA = INTA - 32 IF( INTB.GE.97 .AND. INTB.LE.122 ) INTB = INTB - 32* ELSE IF( ZCODE.EQ.233 .OR. ZCODE.EQ.169 ) THEN** EBCDIC is assumed - ZCODE is the EBCDIC code of either lower or* upper case 'Z'.* IF( INTA.GE.129 .AND. INTA.LE.137 .OR.$        INTA.GE.145 .AND. INTA.LE.153 .OR.     $INTA.GE.162 .AND. INTA.LE.169 ) INTA = INTA + 64 IF( INTB.GE.129 .AND. INTB.LE.137 .OR.$        INTB.GE.145 .AND. INTB.LE.153 .OR.     \$        INTB.GE.162 .AND. INTB.LE.169 ) INTB = INTB + 64*      ELSE IF( ZCODE.EQ.218 .OR. ZCODE.EQ.250 ) THEN**        ASCII is assumed, on Prime machines - ZCODE is the ASCII code*        plus 128 of either lower or upper case 'Z'.*         IF( INTA.GE.225 .AND. INTA.LE.250 ) INTA = INTA - 32         IF( INTB.GE.225 .AND. INTB.LE.250 ) INTB = INTB - 32      END IF      LSAME = INTA.EQ.INTB*      RETURN**     End of LSAME*      END

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