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1 /* lsame.f -- translated by f2c (version 20100827).
2    You must link the resulting object file with libf2c:
3 	on Microsoft Windows system, link with libf2c.lib;
4 	on Linux or Unix systems, link with .../path/to/libf2c.a -lm
5 	or, if you install libf2c.a in a standard place, with -lf2c -lm
6 	-- in that order, at the end of the command line, as in
7 		cc *.o -lf2c -lm
8 	Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
9 
10 		http://www.netlib.org/f2c/libf2c.zip
11 */
12 
13 #include "datatypes.h"
14 
lsame_(char * ca,char * cb,ftnlen ca_len,ftnlen cb_len)15 logical lsame_(char *ca, char *cb, ftnlen ca_len, ftnlen cb_len)
16 {
17     /* System generated locals */
18     logical ret_val;
19 
20     /* Local variables */
21     integer inta, intb, zcode;
22 
23 
24 /*  -- LAPACK auxiliary routine (version 3.1) -- */
25 /*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
26 /*     November 2006 */
27 
28 /*     .. Scalar Arguments .. */
29 /*     .. */
30 
31 /*  Purpose */
32 /*  ======= */
33 
34 /*  LSAME returns .TRUE. if CA is the same letter as CB regardless of */
35 /*  case. */
36 
37 /*  Arguments */
38 /*  ========= */
39 
40 /*  CA      (input) CHARACTER*1 */
41 
42 /*  CB      (input) CHARACTER*1 */
43 /*          CA and CB specify the single characters to be compared. */
44 
45 /* ===================================================================== */
46 
47 /*     .. Intrinsic Functions .. */
48 /*     .. */
49 /*     .. Local Scalars .. */
50 /*     .. */
51 
52 /*     Test if the characters are equal */
53 
54     ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
55     if (ret_val) {
56 	return ret_val;
57     }
58 
59 /*     Now test for equivalence if both characters are alphabetic. */
60 
61     zcode = 'Z';
62 
63 /*     Use 'Z' rather than 'A' so that ASCII can be detected on Prime */
64 /*     machines, on which ICHAR returns a value with bit 8 set. */
65 /*     ICHAR('A') on Prime machines returns 193 which is the same as */
66 /*     ICHAR('A') on an EBCDIC machine. */
67 
68     inta = *(unsigned char *)ca;
69     intb = *(unsigned char *)cb;
70 
71     if (zcode == 90 || zcode == 122) {
72 
73 /*        ASCII is assumed - ZCODE is the ASCII code of either lower or */
74 /*        upper case 'Z'. */
75 
76 	if (inta >= 97 && inta <= 122) {
77 	    inta += -32;
78 	}
79 	if (intb >= 97 && intb <= 122) {
80 	    intb += -32;
81 	}
82 
83     } else if (zcode == 233 || zcode == 169) {
84 
85 /*        EBCDIC is assumed - ZCODE is the EBCDIC code of either lower or */
86 /*        upper case 'Z'. */
87 
88 	if ((inta >= 129 && inta <= 137) || (inta >= 145 && inta <= 153) ||
89             (inta >= 162 && inta <= 169)) {
90 	    inta += 64;
91 	}
92 	if ((intb >= 129 && intb <= 137) || (intb >= 145 && intb <= 153) ||
93             (intb >= 162 && intb <= 169)) {
94 	    intb += 64;
95 	}
96 
97     } else if (zcode == 218 || zcode == 250) {
98 
99 /*        ASCII is assumed, on Prime machines - ZCODE is the ASCII code */
100 /*        plus 128 of either lower or upper case 'Z'. */
101 
102 	if (inta >= 225 && inta <= 250) {
103 	    inta += -32;
104 	}
105 	if (intb >= 225 && intb <= 250) {
106 	    intb += -32;
107 	}
108     }
109     ret_val = inta == intb;
110 
111 /*     RETURN */
112 
113 /*     End of LSAME */
114 
115     return ret_val;
116 } /* lsame_ */
117 
118