lsame.c
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00001 /* lsame.f -- translated by f2c (version 20061008).
00002    You must link the resulting object file with libf2c:
00003         on Microsoft Windows system, link with libf2c.lib;
00004         on Linux or Unix systems, link with .../path/to/libf2c.a -lm
00005         or, if you install libf2c.a in a standard place, with -lf2c -lm
00006         -- in that order, at the end of the command line, as in
00007                 cc *.o -lf2c -lm
00008         Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
00009 
00010                 http://www.netlib.org/f2c/libf2c.zip
00011 */
00012 
00013 #include "f2c.h"
00014 #include "blaswrap.h"
00015 
00016 logical lsame_(char *ca, char *cb)
00017 {
00018     /* System generated locals */
00019     logical ret_val;
00020 
00021     /* Local variables */
00022     integer inta, intb, zcode;
00023 
00024 
00025 /*  -- LAPACK auxiliary routine (version 3.2) -- */
00026 /*     Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. */
00027 /*     November 2006 */
00028 
00029 /*     .. Scalar Arguments .. */
00030 /*     .. */
00031 
00032 /*  Purpose */
00033 /*  ======= */
00034 
00035 /*  LSAME returns .TRUE. if CA is the same letter as CB regardless of */
00036 /*  case. */
00037 
00038 /*  Arguments */
00039 /*  ========= */
00040 
00041 /*  CA      (input) CHARACTER*1 */
00042 /*  CB      (input) CHARACTER*1 */
00043 /*          CA and CB specify the single characters to be compared. */
00044 
00045 /* ===================================================================== */
00046 
00047 /*     .. Intrinsic Functions .. */
00048 /*     .. */
00049 /*     .. Local Scalars .. */
00050 /*     .. */
00051 /*     .. Executable Statements .. */
00052 
00053 /*     Test if the characters are equal */
00054 
00055     ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
00056     if (ret_val) {
00057         return ret_val;
00058     }
00059 
00060 /*     Now test for equivalence if both characters are alphabetic. */
00061 
00062     zcode = 'Z';
00063 
00064 /*     Use 'Z' rather than 'A' so that ASCII can be detected on Prime */
00065 /*     machines, on which ICHAR returns a value with bit 8 set. */
00066 /*     ICHAR('A') on Prime machines returns 193 which is the same as */
00067 /*     ICHAR('A') on an EBCDIC machine. */
00068 
00069     inta = *(unsigned char *)ca;
00070     intb = *(unsigned char *)cb;
00071 
00072     if (zcode == 90 || zcode == 122) {
00073 
00074 /*        ASCII is assumed - ZCODE is the ASCII code of either lower or */
00075 /*        upper case 'Z'. */
00076 
00077         if (inta >= 97 && inta <= 122) {
00078             inta += -32;
00079         }
00080         if (intb >= 97 && intb <= 122) {
00081             intb += -32;
00082         }
00083 
00084     } else if (zcode == 233 || zcode == 169) {
00085 
00086 /*        EBCDIC is assumed - ZCODE is the EBCDIC code of either lower or */
00087 /*        upper case 'Z'. */
00088 
00089         if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 || inta 
00090                 >= 162 && inta <= 169) {
00091             inta += 64;
00092         }
00093         if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 || intb 
00094                 >= 162 && intb <= 169) {
00095             intb += 64;
00096         }
00097 
00098     } else if (zcode == 218 || zcode == 250) {
00099 
00100 /*        ASCII is assumed, on Prime machines - ZCODE is the ASCII code */
00101 /*        plus 128 of either lower or upper case 'Z'. */
00102 
00103         if (inta >= 225 && inta <= 250) {
00104             inta += -32;
00105         }
00106         if (intb >= 225 && intb <= 250) {
00107             intb += -32;
00108         }
00109     }
00110     ret_val = inta == intb;
00111 
00112 /*     RETURN */
00113 
00114 /*     End of LSAME */
00115 
00116     return ret_val;
00117 } /* lsame_ */


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autogenerated on Sat Jun 8 2019 18:55:56