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#include "rb_lapack.h"
extern VOID csyr_(char* uplo, integer* n, complex* alpha, complex* x, integer* incx, complex* a, integer* lda);
static VALUE
rblapack_csyr(int argc, VALUE *argv, VALUE self){
VALUE rblapack_uplo;
char uplo;
VALUE rblapack_alpha;
complex alpha;
VALUE rblapack_x;
complex *x;
VALUE rblapack_incx;
integer incx;
VALUE rblapack_a;
complex *a;
VALUE rblapack_a_out__;
complex *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.csyr( uplo, alpha, x, incx, a, [:usage => usage, :help => help])\n\n\nFORTRAN MANUAL\n SUBROUTINE CSYR( UPLO, N, ALPHA, X, INCX, A, LDA )\n\n* Purpose\n* =======\n*\n* CSYR performs the symmetric rank 1 operation\n*\n* A := alpha*x*( x' ) + A,\n*\n* where alpha is a complex scalar, x is an n element vector and A is an\n* n by n symmetric matrix.\n*\n\n* Arguments\n* ==========\n*\n* UPLO (input) CHARACTER*1\n* On entry, UPLO specifies whether the upper or lower\n* triangular part of the array A is to be referenced as\n* follows:\n*\n* UPLO = 'U' or 'u' Only the upper triangular part of A\n* is to be referenced.\n*\n* UPLO = 'L' or 'l' Only the lower triangular part of A\n* is to be referenced.\n*\n* Unchanged on exit.\n*\n* N (input) INTEGER\n* On entry, N specifies the order of the matrix A.\n* N must be at least zero.\n* Unchanged on exit.\n*\n* ALPHA (input) COMPLEX\n* On entry, ALPHA specifies the scalar alpha.\n* Unchanged on exit.\n*\n* X (input) COMPLEX array, dimension at least\n* ( 1 + ( N - 1 )*abs( INCX ) ).\n* Before entry, the incremented array X must contain the N-\n* element vector x.\n* Unchanged on exit.\n*\n* INCX (input) INTEGER\n* On entry, INCX specifies the increment for the elements of\n* X. INCX must not be zero.\n* Unchanged on exit.\n*\n* A (input/output) COMPLEX array, dimension ( LDA, N )\n* Before entry, with UPLO = 'U' or 'u', the leading n by n\n* upper triangular part of the array A must contain the upper\n* triangular part of the symmetric matrix and the strictly\n* lower triangular part of A is not referenced. On exit, the\n* upper triangular part of the array A is overwritten by the\n* upper triangular part of the updated matrix.\n* Before entry, with UPLO = 'L' or 'l', the leading n by n\n* lower triangular part of the array A must contain the lower\n* triangular part of the symmetric matrix and the strictly\n* upper triangular part of A is not referenced. On exit, the\n* lower triangular part of the array A is overwritten by the\n* lower triangular part of the updated matrix.\n*\n* LDA (input) INTEGER\n* On entry, LDA specifies the first dimension of A as declared\n* in the calling (sub) program. LDA must be at least\n* max( 1, N ).\n* Unchanged on exit.\n*\n\n* =====================================================================\n*\n\n");
return Qnil;
}
if (rb_hash_aref(rblapack_options, sUsage) == Qtrue) {
printf("%s\n", "USAGE:\n a = NumRu::Lapack.csyr( uplo, alpha, x, incx, 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_alpha = argv[1];
rblapack_x = argv[2];
rblapack_incx = argv[3];
rblapack_a = argv[4];
if (argc == 5) {
} else if (rblapack_options != Qnil) {
} else {
}
uplo = StringValueCStr(rblapack_uplo)[0];
incx = NUM2INT(rblapack_incx);
alpha.r = (real)NUM2DBL(rb_funcall(rblapack_alpha, rb_intern("real"), 0));
alpha.i = (real)NUM2DBL(rb_funcall(rblapack_alpha, rb_intern("imag"), 0));
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_SCOMPLEX)
rblapack_a = na_change_type(rblapack_a, NA_SCOMPLEX);
a = NA_PTR_TYPE(rblapack_a, complex*);
if (!NA_IsNArray(rblapack_x))
rb_raise(rb_eArgError, "x (3th argument) must be NArray");
if (NA_RANK(rblapack_x) != 1)
rb_raise(rb_eArgError, "rank of x (3th argument) must be %d", 1);
if (NA_SHAPE0(rblapack_x) != (1 + ( n - 1 )*abs( incx )))
rb_raise(rb_eRuntimeError, "shape 0 of x must be %d", 1 + ( n - 1 )*abs( incx ));
if (NA_TYPE(rblapack_x) != NA_SCOMPLEX)
rblapack_x = na_change_type(rblapack_x, NA_SCOMPLEX);
x = NA_PTR_TYPE(rblapack_x, complex*);
{
na_shape_t shape[2];
shape[0] = lda;
shape[1] = n;
rblapack_a_out__ = na_make_object(NA_SCOMPLEX, 2, shape, cNArray);
}
a_out__ = NA_PTR_TYPE(rblapack_a_out__, complex*);
MEMCPY(a_out__, a, complex, NA_TOTAL(rblapack_a));
rblapack_a = rblapack_a_out__;
a = a_out__;
csyr_(&uplo, &n, &alpha, x, &incx, a, &lda);
return rblapack_a;
}
void
init_lapack_csyr(VALUE mLapack, VALUE sH, VALUE sU, VALUE zero){
sHelp = sH;
sUsage = sU;
rblapack_ZERO = zero;
rb_define_module_function(mLapack, "csyr", rblapack_csyr, -1);
}
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