59 lines
2.2 KiB
C++
59 lines
2.2 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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static doublereal c_b9 = 1.;
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int dpotrs_(char *uplo, integer *n, integer *nrhs, doublereal *a, integer *lda, doublereal *b,
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integer *ldb, integer *info, ftnlen uplo_len)
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{
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integer a_dim1, a_offset, b_dim1, b_offset, i__1;
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extern logical lsame_(char *, char *, ftnlen, ftnlen);
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extern int dtrsm_(char *, char *, char *, char *, integer *, integer *, doublereal *,
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doublereal *, integer *, doublereal *, integer *, ftnlen, ftnlen, ftnlen,
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ftnlen);
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logical upper;
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extern int xerbla_(char *, integer *, 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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b_dim1 = *ldb;
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b_offset = 1 + b_dim1;
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b -= b_offset;
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*info = 0;
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upper = lsame_(uplo, (char *)"U", (ftnlen)1, (ftnlen)1);
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if (!upper && !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 (*nrhs < 0) {
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*info = -3;
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} else if (*lda < max(1, *n)) {
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*info = -5;
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} else if (*ldb < max(1, *n)) {
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*info = -7;
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}
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if (*info != 0) {
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i__1 = -(*info);
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xerbla_((char *)"DPOTRS", &i__1, (ftnlen)6);
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return 0;
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}
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if (*n == 0 || *nrhs == 0) {
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return 0;
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}
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if (upper) {
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dtrsm_((char *)"Left", (char *)"Upper", (char *)"Transpose", (char *)"Non-unit", n, nrhs, &c_b9, &a[a_offset], lda,
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&b[b_offset], ldb, (ftnlen)4, (ftnlen)5, (ftnlen)9, (ftnlen)8);
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dtrsm_((char *)"Left", (char *)"Upper", (char *)"No transpose", (char *)"Non-unit", n, nrhs, &c_b9, &a[a_offset], lda,
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&b[b_offset], ldb, (ftnlen)4, (ftnlen)5, (ftnlen)12, (ftnlen)8);
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} else {
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dtrsm_((char *)"Left", (char *)"Lower", (char *)"No transpose", (char *)"Non-unit", n, nrhs, &c_b9, &a[a_offset], lda,
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&b[b_offset], ldb, (ftnlen)4, (ftnlen)5, (ftnlen)12, (ftnlen)8);
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dtrsm_((char *)"Left", (char *)"Lower", (char *)"Transpose", (char *)"Non-unit", n, nrhs, &c_b9, &a[a_offset], lda,
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&b[b_offset], ldb, (ftnlen)4, (ftnlen)5, (ftnlen)9, (ftnlen)8);
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}
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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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