41 lines
1.2 KiB
C++
41 lines
1.2 KiB
C++
#ifdef __cplusplus
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extern "C" {
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#endif
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#include "lmp_f2c.h"
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int dpotri_(char *uplo, integer *n, doublereal *a, integer *lda, integer *info, ftnlen uplo_len)
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{
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integer a_dim1, a_offset, i__1;
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extern logical lsame_(char *, char *, ftnlen, ftnlen);
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extern int xerbla_(char *, integer *, ftnlen),
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dlauum_(char *, integer *, doublereal *, integer *, integer *, ftnlen),
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dtrtri_(char *, char *, integer *, doublereal *, integer *, integer *, ftnlen, ftnlen);
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a_dim1 = *lda;
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a_offset = 1 + a_dim1;
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a -= a_offset;
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*info = 0;
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if (!lsame_(uplo, (char *)"U", (ftnlen)1, (ftnlen)1) && !lsame_(uplo, (char *)"L", (ftnlen)1, (ftnlen)1)) {
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*info = -1;
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} else if (*n < 0) {
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*info = -2;
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} else if (*lda < max(1, *n)) {
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*info = -4;
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}
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if (*info != 0) {
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i__1 = -(*info);
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xerbla_((char *)"DPOTRI", &i__1, (ftnlen)6);
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return 0;
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}
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if (*n == 0) {
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return 0;
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}
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dtrtri_(uplo, (char *)"N", n, &a[a_offset], lda, info, (ftnlen)1, (ftnlen)1);
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if (*info > 0) {
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return 0;
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}
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dlauum_(uplo, n, &a[a_offset], lda, info, (ftnlen)1);
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return 0;
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}
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#ifdef __cplusplus
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}
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#endif
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