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- LOGICAL FUNCTION LSAME(CA,CB)
-*
-* -- LAPACK auxiliary routine (version 3.1) --
-* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd..
-* November 2006
-*
-* .. Scalar Arguments ..
- CHARACTER 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
-* ..
-*
-* 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