Chris@202: /* lsame.f -- translated by f2c (version 20061008).
Chris@202:    You must link the resulting object file with libf2c:
Chris@202: 	on Microsoft Windows system, link with libf2c.lib;
Chris@202: 	on Linux or Unix systems, link with .../path/to/libf2c.a -lm
Chris@202: 	or, if you install libf2c.a in a standard place, with -lf2c -lm
Chris@202: 	-- in that order, at the end of the command line, as in
Chris@202: 		cc *.o -lf2c -lm
Chris@202: 	Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
Chris@202: 
Chris@202: 		http://www.netlib.org/f2c/libf2c.zip
Chris@202: */
Chris@202: 
Chris@202: #include "f2c.h"
Chris@202: #include "blaswrap.h"
Chris@202: 
Chris@202: logical lsame_(char *ca, char *cb)
Chris@202: {
Chris@202:     /* System generated locals */
Chris@202:     logical ret_val;
Chris@202: 
Chris@202:     /* Local variables */
Chris@202:     integer inta, intb, zcode;
Chris@202: 
Chris@202: 
Chris@202: /*  -- LAPACK auxiliary routine (version 3.1) -- */
Chris@202: /*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
Chris@202: /*     November 2006 */
Chris@202: 
Chris@202: /*     .. Scalar Arguments .. */
Chris@202: /*     .. */
Chris@202: 
Chris@202: /*  Purpose */
Chris@202: /*  ======= */
Chris@202: 
Chris@202: /*  LSAME returns .TRUE. if CA is the same letter as CB regardless of */
Chris@202: /*  case. */
Chris@202: 
Chris@202: /*  Arguments */
Chris@202: /*  ========= */
Chris@202: 
Chris@202: /*  CA      (input) CHARACTER*1 */
Chris@202: 
Chris@202: /*  CB      (input) CHARACTER*1 */
Chris@202: /*          CA and CB specify the single characters to be compared. */
Chris@202: 
Chris@202: /* ===================================================================== */
Chris@202: 
Chris@202: /*     .. Intrinsic Functions .. */
Chris@202: /*     .. */
Chris@202: /*     .. Local Scalars .. */
Chris@202: /*     .. */
Chris@202: 
Chris@202: /*     Test if the characters are equal */
Chris@202: 
Chris@202:     ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
Chris@202:     if (ret_val) {
Chris@202: 	return ret_val;
Chris@202:     }
Chris@202: 
Chris@202: /*     Now test for equivalence if both characters are alphabetic. */
Chris@202: 
Chris@202:     zcode = 'Z';
Chris@202: 
Chris@202: /*     Use 'Z' rather than 'A' so that ASCII can be detected on Prime */
Chris@202: /*     machines, on which ICHAR returns a value with bit 8 set. */
Chris@202: /*     ICHAR('A') on Prime machines returns 193 which is the same as */
Chris@202: /*     ICHAR('A') on an EBCDIC machine. */
Chris@202: 
Chris@202:     inta = *(unsigned char *)ca;
Chris@202:     intb = *(unsigned char *)cb;
Chris@202: 
Chris@202:     if (zcode == 90 || zcode == 122) {
Chris@202: 
Chris@202: /*        ASCII is assumed - ZCODE is the ASCII code of either lower or */
Chris@202: /*        upper case 'Z'. */
Chris@202: 
Chris@202: 	if (inta >= 97 && inta <= 122) {
Chris@202: 	    inta += -32;
Chris@202: 	}
Chris@202: 	if (intb >= 97 && intb <= 122) {
Chris@202: 	    intb += -32;
Chris@202: 	}
Chris@202: 
Chris@202:     } else if (zcode == 233 || zcode == 169) {
Chris@202: 
Chris@202: /*        EBCDIC is assumed - ZCODE is the EBCDIC code of either lower or */
Chris@202: /*        upper case 'Z'. */
Chris@202: 
Chris@202: 	if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 || inta 
Chris@202: 		>= 162 && inta <= 169) {
Chris@202: 	    inta += 64;
Chris@202: 	}
Chris@202: 	if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 || intb 
Chris@202: 		>= 162 && intb <= 169) {
Chris@202: 	    intb += 64;
Chris@202: 	}
Chris@202: 
Chris@202:     } else if (zcode == 218 || zcode == 250) {
Chris@202: 
Chris@202: /*        ASCII is assumed, on Prime machines - ZCODE is the ASCII code */
Chris@202: /*        plus 128 of either lower or upper case 'Z'. */
Chris@202: 
Chris@202: 	if (inta >= 225 && inta <= 250) {
Chris@202: 	    inta += -32;
Chris@202: 	}
Chris@202: 	if (intb >= 225 && intb <= 250) {
Chris@202: 	    intb += -32;
Chris@202: 	}
Chris@202:     }
Chris@202:     ret_val = inta == intb;
Chris@202: 
Chris@202: /*     RETURN */
Chris@202: 
Chris@202: /*     End of LSAME */
Chris@202: 
Chris@202:     return ret_val;
Chris@202: } /* lsame_ */