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#include "rb_lapack.h"
extern VOID dlaset_(char* uplo, integer* m, integer* n, doublereal* alpha, doublereal* beta, doublereal* a, integer* lda);
static VALUE
rblapack_dlaset(int argc, VALUE *argv, VALUE self){
VALUE rblapack_uplo;
char uplo;
VALUE rblapack_m;
integer m;
VALUE rblapack_alpha;
doublereal alpha;
VALUE rblapack_beta;
doublereal beta;
VALUE rblapack_a;
doublereal *a;
VALUE rblapack_a_out__;
doublereal *a_out__;
integer lda;
integer n;
VALUE rblapack_options;
if (argc > 0 && TYPE(argv[argc-1]) == T_HASH) {
argc--;
rblapack_options = argv[argc];
if (rb_hash_aref(rblapack_options, sHelp) == Qtrue) {
printf("%s\n", "USAGE:\n a = NumRu::Lapack.dlaset( uplo, m, alpha, beta, a, [:usage => usage, :help => help])\n\n\nFORTRAN MANUAL\n SUBROUTINE DLASET( UPLO, M, N, ALPHA, BETA, A, LDA )\n\n* Purpose\n* =======\n*\n* DLASET initializes an m-by-n matrix A to BETA on the diagonal and\n* ALPHA on the offdiagonals.\n*\n\n* Arguments\n* =========\n*\n* UPLO (input) CHARACTER*1\n* Specifies the part of the matrix A to be set.\n* = 'U': Upper triangular part is set; the strictly lower\n* triangular part of A is not changed.\n* = 'L': Lower triangular part is set; the strictly upper\n* triangular part of A is not changed.\n* Otherwise: All of the matrix A is set.\n*\n* M (input) INTEGER\n* The number of rows of the matrix A. M >= 0.\n*\n* N (input) INTEGER\n* The number of columns of the matrix A. N >= 0.\n*\n* ALPHA (input) DOUBLE PRECISION\n* The constant to which the offdiagonal elements are to be set.\n*\n* BETA (input) DOUBLE PRECISION\n* The constant to which the diagonal elements are to be set.\n*\n* A (input/output) DOUBLE PRECISION array, dimension (LDA,N)\n* On exit, the leading m-by-n submatrix of A is set as follows:\n*\n* if UPLO = 'U', A(i,j) = ALPHA, 1<=i<=j-1, 1<=j<=n,\n* if UPLO = 'L', A(i,j) = ALPHA, j+1<=i<=m, 1<=j<=n,\n* otherwise, A(i,j) = ALPHA, 1<=i<=m, 1<=j<=n, i.ne.j,\n*\n* and, for all UPLO, A(i,i) = BETA, 1<=i<=min(m,n).\n*\n* LDA (input) INTEGER\n* The leading dimension of the array A. LDA >= max(1,M).\n*\n\n* =====================================================================\n*\n* .. Local Scalars ..\n INTEGER I, J\n* ..\n* .. External Functions ..\n LOGICAL LSAME\n EXTERNAL LSAME\n* ..\n* .. Intrinsic Functions ..\n INTRINSIC MIN\n* ..\n\n");
return Qnil;
}
if (rb_hash_aref(rblapack_options, sUsage) == Qtrue) {
printf("%s\n", "USAGE:\n a = NumRu::Lapack.dlaset( uplo, m, alpha, beta, a, [:usage => usage, :help => help])\n");
return Qnil;
}
} else
rblapack_options = Qnil;
if (argc != 5 && argc != 5)
rb_raise(rb_eArgError,"wrong number of arguments (%d for 5)", argc);
rblapack_uplo = argv[0];
rblapack_m = argv[1];
rblapack_alpha = argv[2];
rblapack_beta = argv[3];
rblapack_a = argv[4];
if (argc == 5) {
} else if (rblapack_options != Qnil) {
} else {
}
uplo = StringValueCStr(rblapack_uplo)[0];
alpha = NUM2DBL(rblapack_alpha);
if (!NA_IsNArray(rblapack_a))
rb_raise(rb_eArgError, "a (5th argument) must be NArray");
if (NA_RANK(rblapack_a) != 2)
rb_raise(rb_eArgError, "rank of a (5th argument) must be %d", 2);
lda = NA_SHAPE0(rblapack_a);
n = NA_SHAPE1(rblapack_a);
if (NA_TYPE(rblapack_a) != NA_DFLOAT)
rblapack_a = na_change_type(rblapack_a, NA_DFLOAT);
a = NA_PTR_TYPE(rblapack_a, doublereal*);
m = NUM2INT(rblapack_m);
beta = NUM2DBL(rblapack_beta);
{
na_shape_t shape[2];
shape[0] = lda;
shape[1] = n;
rblapack_a_out__ = na_make_object(NA_DFLOAT, 2, shape, cNArray);
}
a_out__ = NA_PTR_TYPE(rblapack_a_out__, doublereal*);
MEMCPY(a_out__, a, doublereal, NA_TOTAL(rblapack_a));
rblapack_a = rblapack_a_out__;
a = a_out__;
dlaset_(&uplo, &m, &n, &alpha, &beta, a, &lda);
return rblapack_a;
}
void
init_lapack_dlaset(VALUE mLapack, VALUE sH, VALUE sU, VALUE zero){
sHelp = sH;
sUsage = sU;
rblapack_ZERO = zero;
rb_define_module_function(mLapack, "dlaset", rblapack_dlaset, -1);
}
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