Mercurial > octave
view examples/code/make_int.cc @ 23446:cd4e1ee28716
maint: Use convention 'void * fcn ()' for functions which return pointers.
* make_int.cc, dialog.h, file-editor-interface.h, file-editor-tab.h,
file-editor.h, octave-txt-lexer.h, main-window.h, octave-dock-widget.h,
parser.h, webinfo.h, resource-manager.h, thread-manager.h, c-file-ptr-stream.h,
call-stack.h, comment-list.h, ft-text-renderer.h, gl-render.cc, input.h,
mex.cc, mexproto.h, mxarray.in.h, oct-fstrm.h, oct-iostrm.h, oct-procbuf.h,
oct-stdstrm.h, oct-stream.cc, oct-stream.h, oct-strstrm.h, octave-link.h,
sighandlers.cc, symtab.h, sysdep.h, utils.h, audiodevinfo.cc, ov-base-diag.h,
ov-base-int.h, ov-base-scalar.h, ov-base-sparse.h, ov-base.h, ov-bool-mat.h,
ov-bool-sparse.h, ov-bool.h, ov-builtin.h, ov-cell.h, ov-ch-mat.h, ov-class.h,
ov-classdef.h, ov-colon.h, ov-complex.cc, ov-complex.h, ov-cs-list.h,
ov-cx-diag.h, ov-cx-mat.h, ov-cx-sparse.h, ov-fcn-handle.h, ov-fcn-inline.h,
ov-fcn.h, ov-float.h, ov-flt-complex.h, ov-flt-cx-diag.h, ov-flt-cx-mat.h,
ov-flt-re-diag.h, ov-flt-re-mat.h, ov-intx.h, ov-java.cc, ov-java.h,
ov-lazy-idx.h, ov-mex-fcn.h, ov-oncleanup.h, ov-perm.h, ov-range.h,
ov-re-diag.h, ov-re-mat.h, ov-re-sparse.h, ov-scalar.h, ov-str-mat.h,
ov-struct.h, ov-usr-fcn.h, ov.h, octave.h, bp-table.h, jit-ir.h,
jit-typeinfo.h, jit-util.h, lex.h, parse.h, pt-arg-list.h, pt-array-list.h,
pt-assign.h, pt-binop.h, pt-cell.h, pt-classdef.h, pt-cmd.h, pt-colon.h,
pt-const.h, pt-decl.h, pt-except.h, pt-exp.h, pt-fcn-handle.h, pt-funcall.h,
pt-id.h, pt-idx.h, pt-jit.h, pt-jump.h, pt-loop.h, pt-mat.h, pt-misc.h,
pt-select.h, pt-stmt.h, pt-unop.h, token.h, Array.cc, Array.h, DiagArray2.h,
Sparse.h, dim-vector.h, idx-vector.h, sparse-chol.cc, cmd-edit.cc, cmd-edit.h,
lo-array-errwarn.cc, lo-array-errwarn.h, lo-array-gripes.cc, lo-utils.h,
oct-inttypes.h, oct-locbuf.h, oct-refcount.h, oct-rl-edit.h, oct-rl-hist.h,
oct-shlib.cc, oct-shlib.h, str-vec.h, canonicalize-file-name-wrapper.h,
dirent-wrappers.h, getopt-wrapper.h, glob-wrappers.h, localcharset-wrapper.h,
set-program-name-wrapper.h, signal-wrappers.h, strdup-wrapper.h,
tmpfile-wrapper.h, unistd-wrappers.h, display-available.h:
Use convention 'void * fcn ()' for functions which return pointers.
author | Rik <rik@octave.org> |
---|---|
date | Thu, 27 Apr 2017 09:48:57 -0700 |
parents | 87e3163f6c87 |
children | f6c5db0a02e7 |
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#include <octave/config.h> #include <cstdlib> #include <string> #include <ostream> #include <octave/lo-mappers.h> #include <octave/lo-utils.h> #include <octave/mx-base.h> #include <octave/str-vec.h> #include <octave/defun-dld.h> #include <octave/error.h> #include <octave/gripes.h> #include <octave/oct-obj.h> #include <octave/ops.h> #include <octave/ov-base.h> #include <octave/ov-typeinfo.h> #include <octave/ov.h> #include <octave/ov-scalar.h> #include <octave/pager.h> #include <octave/pr-output.h> #include <octave/symtab.h> #include <octave/variables.h> class octave_value_list; class tree_walker; // Integer values. class octave_integer : public octave_base_value { public: octave_integer (void) : octave_base_value (), scalar (0) { } octave_integer (int i) : octave_base_value (), scalar (i) { } octave_integer (const octave_integer& s) : octave_base_value (), scalar (s.scalar) { } ~octave_integer (void) = default; octave_base_value * clone (void) { return new octave_integer (*this); } #if 0 void *operator new (size_t size); void operator delete (void *p, size_t size); #endif idx_vector index_vector (void) const { return idx_vector ((double) scalar); } int rows (void) const { return 1; } int columns (void) const { return 1; } bool is_constant (void) const { return true; } bool is_defined (void) const { return true; } bool is_real_scalar (void) const { return true; } octave_value all (void) const { return (double) (scalar != 0); } octave_value any (void) const { return (double) (scalar != 0); } bool is_real_type (void) const { return true; } bool is_scalar_type (void) const { return true; } bool is_numeric_type (void) const { return true; } bool valid_as_scalar_index (void) const { return scalar == 1; } bool valid_as_zero_index (void) const { return scalar == 0; } bool is_true (void) const { return (scalar != 0); } double double_value (bool = false) const { return (double) scalar; } int integer_value (bool = false) const { return scalar; } Matrix matrix_value (bool = false) const { return Matrix (1, 1, scalar); } Complex complex_value (bool = false) const { return scalar; } ComplexMatrix complex_matrix_value (bool = false) const { return ComplexMatrix (1, 1, Complex (scalar)); } octave_value gnot (void) const { return octave_value ((double) ! scalar); } octave_value uminus (void) const { return new octave_integer (- scalar); } octave_value transpose (void) const { return new octave_integer (scalar); } octave_value hermitian (void) const { return new octave_integer (scalar); } void increment (void) { ++scalar; } void decrement (void) { --scalar; } void print (std::ostream& os, bool pr_as_read_syntax = false); private: int scalar; DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA }; void octave_integer::print (std::ostream& os, bool pr_as_read_syntax) { os << scalar; newline (os); } #if defined (DEFUNOP_OP) #undef DEFUNOP_OP #endif #define DEFUNOP_OP(name, t, op) \ static octave_value \ CONCAT2(oct_unop_, name) (const octave_base_value& a) \ { \ const octave_ ## t& v = dynamic_cast<const octave_ ## t&> (a); \ return octave_value (new octave_integer (op v.t ## _value ())); \ } DEFUNOP_OP (gnot, integer, !) DEFUNOP_OP (uminus, integer, -) DEFUNOP_OP (transpose, integer, /* no-op */) DEFUNOP_OP (hermitian, integer, /* no-op */) DEFNCUNOP_METHOD (incr, integer, increment) DEFNCUNOP_METHOD (decr, integer, decrement) #if defined (DEFBINOP_OP) #undef DEFBINOP_OP #endif #define DEFBINOP_OP(name, t1, t2, op) \ static octave_value \ CONCAT2(oct_binop_, name) (const octave_base_value& a1, \ const octave_base_value& a2) \ { \ const octave_ ## t1& v1 = dynamic_cast<const octave_ ## t1&> (a1); \ const octave_ ## t2& v2 = dynamic_cast<const octave_ ## t2&> (a2); \ return octave_value \ (new octave_integer (v1.t1 ## _value () op v2.t2 ## _value ())); \ } // integer by integer ops. DEFBINOP_OP (add, integer, integer, +) DEFBINOP_OP (sub, integer, integer, -) DEFBINOP_OP (mul, integer, integer, *) DEFBINOP (div, integer, integer) { const octave_integer& v1 = dynamic_cast<const octave_integer&> (a1); const octave_integer& v2 = dynamic_cast<const octave_integer&> (a2); int d = v2.integer_value (); if (d == 0) gripe_divide_by_zero (); return new octave_integer (v1.integer_value () / d); } DEFBINOP (i_s_div, integer, scalar) { const octave_integer& v1 = dynamic_cast<const octave_integer&> (a1); const octave_scalar& v2 = dynamic_cast<const octave_scalar&> (a2); double d = v2.double_value (); if (d == 0.0) gripe_divide_by_zero (); return new octave_scalar (v1.double_value () / d); } DEFBINOP (ldiv, integer, integer) { const octave_integer& v1 = dynamic_cast<const octave_integer&> (a1); const octave_integer& v2 = dynamic_cast<const octave_integer&> (a2); int d = v1.integer_value (); if (d == 0) gripe_divide_by_zero (); return new octave_integer (v2.integer_value () / d); } DEFBINOP_OP (lt, integer, integer, <) DEFBINOP_OP (le, integer, integer, <=) DEFBINOP_OP (eq, integer, integer, ==) DEFBINOP_OP (ge, integer, integer, >=) DEFBINOP_OP (gt, integer, integer, >) DEFBINOP_OP (ne, integer, integer, !=) DEFBINOP_OP (el_mul, integer, integer, !=) DEFBINOP (el_div, integer, integer) { const octave_integer& v1 = dynamic_cast<const octave_integer&> (a1); const octave_integer& v2 = dynamic_cast<const octave_integer&> (a2); int d = v2.integer_value (); if (d == 0) gripe_divide_by_zero (); return new octave_integer (v1.integer_value () / d); } DEFBINOP (el_ldiv, integer, integer) { const octave_integer& v1 = dynamic_cast<const octave_integer&> (a1); const octave_integer& v2 = dynamic_cast<const octave_integer&> (a2); int d = v1.integer_value (); if (d == 0) gripe_divide_by_zero (); return new octave_integer (v2.integer_value () / d); } DEFBINOP_OP (el_and, integer, integer, &&) DEFBINOP_OP (el_or, integer, integer, ||) DEFUN_DLD (make_int, args, , "int_val = make_int (val)\n\ \n\ Creates an integer variable from VAL.") { static bool type_loaded = false; if (! type_loaded) { octave_integer::register_type (); mlock (); octave_stdout << "installing integer type at type-id = " << octave_integer::static_type_id () << "\n"; INSTALL_UNOP (op_not, octave_integer, gnot); INSTALL_UNOP (op_uminus, octave_integer, uminus); INSTALL_UNOP (op_transpose, octave_integer, transpose); INSTALL_UNOP (op_hermitian, octave_integer, hermitian); INSTALL_NCUNOP (op_incr, octave_integer, incr); INSTALL_NCUNOP (op_decr, octave_integer, decr); INSTALL_BINOP (op_add, octave_integer, octave_integer, add); INSTALL_BINOP (op_sub, octave_integer, octave_integer, sub); INSTALL_BINOP (op_mul, octave_integer, octave_integer, mul); INSTALL_BINOP (op_div, octave_integer, octave_integer, div); INSTALL_BINOP (op_ldiv, octave_integer, octave_integer, ldiv); INSTALL_BINOP (op_lt, octave_integer, octave_integer, lt); INSTALL_BINOP (op_le, octave_integer, octave_integer, le); INSTALL_BINOP (op_eq, octave_integer, octave_integer, eq); INSTALL_BINOP (op_ge, octave_integer, octave_integer, ge); INSTALL_BINOP (op_gt, octave_integer, octave_integer, gt); INSTALL_BINOP (op_ne, octave_integer, octave_integer, ne); INSTALL_BINOP (op_el_mul, octave_integer, octave_integer, el_mul); INSTALL_BINOP (op_el_div, octave_integer, octave_integer, el_div); INSTALL_BINOP (op_el_ldiv, octave_integer, octave_integer, el_ldiv); INSTALL_BINOP (op_el_and, octave_integer, octave_integer, el_and); INSTALL_BINOP (op_el_or, octave_integer, octave_integer, el_or); INSTALL_BINOP (op_div, octave_integer, octave_scalar, i_s_div); } octave_value retval; if (args.length () == 1) { double d = args(0).double_value (); retval = octave_value (new octave_integer (octave::math::nint (d))); } else print_usage (); return retval; } DEFUN_DLD (doit, args, , "doit (I)") { octave_value_list retval; if (args(0).type_id () == octave_integer::static_type_id ()) { // At this point, we know we have a handle for an octave_integer // object, so we can peek at the representation and extract the // data. const octave_base_value& rep = args(0).get_rep (); int my_value = ((const octave_integer&) rep) . integer_value (); message ("doit", "your lucky number is: %d", my_value); } else gripe_wrong_type_arg ("doit", args(0)); return retval; } DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_integer, "integer", "integer");