c@427: /* lsame.f -- translated by f2c (version 20061008).
c@427:    You must link the resulting object file with libf2c:
c@427: 	on Microsoft Windows system, link with libf2c.lib;
c@427: 	on Linux or Unix systems, link with .../path/to/libf2c.a -lm
c@427: 	or, if you install libf2c.a in a standard place, with -lf2c -lm
c@427: 	-- in that order, at the end of the command line, as in
c@427: 		cc *.o -lf2c -lm
c@427: 	Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
c@427: 
c@427: 		http://www.netlib.org/f2c/libf2c.zip
c@427: */
c@427: 
c@427: #include "f2c.h"
c@427: #include "blaswrap.h"
c@427: 
c@427: logical lsame_(char *ca, char *cb)
c@427: {
c@427:     /* System generated locals */
c@427:     logical ret_val;
c@427: 
c@427:     /* Local variables */
c@427:     integer inta, intb, zcode;
c@427: 
c@427: 
c@427: /*  -- LAPACK auxiliary routine (version 3.1) -- */
c@427: /*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
c@427: /*     November 2006 */
c@427: 
c@427: /*     .. Scalar Arguments .. */
c@427: /*     .. */
c@427: 
c@427: /*  Purpose */
c@427: /*  ======= */
c@427: 
c@427: /*  LSAME returns .TRUE. if CA is the same letter as CB regardless of */
c@427: /*  case. */
c@427: 
c@427: /*  Arguments */
c@427: /*  ========= */
c@427: 
c@427: /*  CA      (input) CHARACTER*1 */
c@427: 
c@427: /*  CB      (input) CHARACTER*1 */
c@427: /*          CA and CB specify the single characters to be compared. */
c@427: 
c@427: /* ===================================================================== */
c@427: 
c@427: /*     .. Intrinsic Functions .. */
c@427: /*     .. */
c@427: /*     .. Local Scalars .. */
c@427: /*     .. */
c@427: 
c@427: /*     Test if the characters are equal */
c@427: 
c@427:     ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
c@427:     if (ret_val) {
c@427: 	return ret_val;
c@427:     }
c@427: 
c@427: /*     Now test for equivalence if both characters are alphabetic. */
c@427: 
c@427:     zcode = 'Z';
c@427: 
c@427: /*     Use 'Z' rather than 'A' so that ASCII can be detected on Prime */
c@427: /*     machines, on which ICHAR returns a value with bit 8 set. */
c@427: /*     ICHAR('A') on Prime machines returns 193 which is the same as */
c@427: /*     ICHAR('A') on an EBCDIC machine. */
c@427: 
c@427:     inta = *(unsigned char *)ca;
c@427:     intb = *(unsigned char *)cb;
c@427: 
c@427:     if (zcode == 90 || zcode == 122) {
c@427: 
c@427: /*        ASCII is assumed - ZCODE is the ASCII code of either lower or */
c@427: /*        upper case 'Z'. */
c@427: 
c@427: 	if (inta >= 97 && inta <= 122) {
c@427: 	    inta += -32;
c@427: 	}
c@427: 	if (intb >= 97 && intb <= 122) {
c@427: 	    intb += -32;
c@427: 	}
c@427: 
c@427:     } else if (zcode == 233 || zcode == 169) {
c@427: 
c@427: /*        EBCDIC is assumed - ZCODE is the EBCDIC code of either lower or */
c@427: /*        upper case 'Z'. */
c@427: 
c@427: 	if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 || inta 
c@427: 		>= 162 && inta <= 169) {
c@427: 	    inta += 64;
c@427: 	}
c@427: 	if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 || intb 
c@427: 		>= 162 && intb <= 169) {
c@427: 	    intb += 64;
c@427: 	}
c@427: 
c@427:     } else if (zcode == 218 || zcode == 250) {
c@427: 
c@427: /*        ASCII is assumed, on Prime machines - ZCODE is the ASCII code */
c@427: /*        plus 128 of either lower or upper case 'Z'. */
c@427: 
c@427: 	if (inta >= 225 && inta <= 250) {
c@427: 	    inta += -32;
c@427: 	}
c@427: 	if (intb >= 225 && intb <= 250) {
c@427: 	    intb += -32;
c@427: 	}
c@427:     }
c@427:     ret_val = inta == intb;
c@427: 
c@427: /*     RETURN */
c@427: 
c@427: /*     End of LSAME */
c@427: 
c@427:     return ret_val;
c@427: } /* lsame_ */