156 lines
3.9 KiB
C
156 lines
3.9 KiB
C
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/* lsame.f -- translated by f2c (version 20191129).
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You must link the resulting object file with libf2c:
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on Microsoft Windows system, link with libf2c.lib;
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on Linux or Unix systems, link with .../path/to/libf2c.a -lm
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or, if you install libf2c.a in a standard place, with -lf2c -lm
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-- in that order, at the end of the command line, as in
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cc *.o -lf2c -lm
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Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
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http://www.netlib.org/f2c/libf2c.zip
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*/
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#include "third_party/f2c/f2c.h"
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/* > \brief \b LSAME */
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/* =========== DOCUMENTATION =========== */
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/* Online html documentation available at */
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/* http://www.netlib.org/lapack/explore-html/ */
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/* Definition: */
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/* =========== */
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/* LOGICAL FUNCTION LSAME(CA,CB) */
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/* .. Scalar Arguments .. */
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/* CHARACTER CA,CB */
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/* .. */
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/* > \par Purpose: */
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/* ============= */
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/* > */
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/* > \verbatim */
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/* > */
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/* > LSAME returns .TRUE. if CA is the same letter as CB regardless of */
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/* > case. */
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/* > \endverbatim */
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/* Arguments: */
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/* ========== */
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/* > \param[in] CA */
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/* > \verbatim */
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/* > CA is CHARACTER*1 */
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/* > \endverbatim */
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/* > */
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/* > \param[in] CB */
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/* > \verbatim */
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/* > CB is CHARACTER*1 */
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/* > CA and CB specify the single characters to be compared. */
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/* > \endverbatim */
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/* Authors: */
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/* ======== */
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/* > \author Univ. of Tennessee */
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/* > \author Univ. of California Berkeley */
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/* > \author Univ. of Colorado Denver */
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/* > \author NAG Ltd. */
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/* > \date December 2016 */
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/* > \ingroup aux_blas */
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/* ===================================================================== */
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logical lsame_(char *ca, char *cb) {
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/* System generated locals */
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logical ret_val;
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/* Local variables */
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static integer inta, intb, zcode;
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/* -- Reference BLAS level1 routine (version 3.1) -- */
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/* -- Reference BLAS is a software package provided by Univ. of Tennessee,
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* -- */
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/* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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*/
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/* December 2016 */
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/* .. Scalar Arguments .. */
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/* .. */
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/* ===================================================================== */
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/* .. Intrinsic Functions .. */
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/* .. */
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/* .. Local Scalars .. */
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/* .. */
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/* Test if the characters are equal */
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ret_val = *(unsigned char *)ca == *(unsigned char *)cb;
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if (ret_val) {
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return ret_val;
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}
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/* Now test for equivalence if both characters are alphabetic. */
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zcode = 'Z';
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/* Use 'Z' rather than 'A' so that ASCII can be detected on Prime */
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/* machines, on which ICHAR returns a value with bit 8 set. */
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/* ICHAR('A') on Prime machines returns 193 which is the same as */
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/* ICHAR('A') on an EBCDIC machine. */
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inta = *(unsigned char *)ca;
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intb = *(unsigned char *)cb;
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if (zcode == 90 || zcode == 122) {
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/* ASCII is assumed - ZCODE is the ASCII code of either lower or */
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/* upper case 'Z'. */
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if (inta >= 97 && inta <= 122) {
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inta += -32;
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}
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if (intb >= 97 && intb <= 122) {
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intb += -32;
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}
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} else if (zcode == 233 || zcode == 169) {
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/* EBCDIC is assumed - ZCODE is the EBCDIC code of either lower or */
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/* upper case 'Z'. */
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if (inta >= 129 && inta <= 137 || inta >= 145 && inta <= 153 ||
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inta >= 162 && inta <= 169) {
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inta += 64;
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}
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if (intb >= 129 && intb <= 137 || intb >= 145 && intb <= 153 ||
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intb >= 162 && intb <= 169) {
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intb += 64;
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}
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} else if (zcode == 218 || zcode == 250) {
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/* ASCII is assumed, on Prime machines - ZCODE is the ASCII code */
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/* plus 128 of either lower or upper case 'Z'. */
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if (inta >= 225 && inta <= 250) {
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inta += -32;
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}
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if (intb >= 225 && intb <= 250) {
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intb += -32;
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}
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}
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ret_val = inta == intb;
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/* RETURN */
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/* End of LSAME */
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return ret_val;
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} /* lsame_ */
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