Mercurial > octave
view libinterp/corefcn/hex2num.cc @ 31605:e88a07dec498 stable
maint: Use macros to begin/end C++ namespaces.
* oct-conf-post-public.in.h: Define two macros (OCTAVE_BEGIN_NAMESPACE,
OCTAVE_END_NAMESPACE) that can be used to start/end a namespace.
* mk-opts.pl, build-env.h, build-env.in.cc, __betainc__.cc, __contourc__.cc,
__dsearchn__.cc, __eigs__.cc, __expint__.cc, __ftp__.cc, __gammainc__.cc,
__ichol__.cc, __ilu__.cc, __isprimelarge__.cc, __lin_interpn__.cc,
__magick_read__.cc, __pchip_deriv__.cc, __qp__.cc, amd.cc, auto-shlib.cc,
auto-shlib.h, balance.cc, base-text-renderer.cc, base-text-renderer.h,
besselj.cc, bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h,
call-stack.cc, call-stack.h, ccolamd.cc, cellfun.cc, chol.cc, colamd.cc,
colloc.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc, data.h, debug.cc,
defaults.cc, defaults.h, defun-int.h, defun.cc, det.cc, dirfns.cc, display.cc,
display.h, dlmread.cc, dmperm.cc, dot.cc, dynamic-ld.cc, dynamic-ld.h, eig.cc,
ellipj.cc, environment.cc, environment.h, error.cc, error.h, errwarn.h,
event-manager.cc, event-manager.h, event-queue.cc, event-queue.h, fcn-info.cc,
fcn-info.h, fft.cc, fft2.cc, fftn.cc, file-io.cc, filter.cc, find.cc,
ft-text-renderer.cc, ft-text-renderer.h, gcd.cc, getgrent.cc, getpwent.cc,
getrusage.cc, givens.cc, gl-render.cc, gl-render.h, gl2ps-print.cc,
gl2ps-print.h, graphics-toolkit.cc, graphics-toolkit.h, graphics.cc,
graphics.in.h, gsvd.cc, gtk-manager.cc, gtk-manager.h, hash.cc, help.cc,
help.h, hess.cc, hex2num.cc, hook-fcn.cc, hook-fcn.h, input.cc, input.h,
interpreter-private.cc, interpreter-private.h, interpreter.cc, interpreter.h,
inv.cc, jsondecode.cc, jsonencode.cc, kron.cc, latex-text-renderer.cc,
latex-text-renderer.h, load-path.cc, load-path.h, load-save.cc, load-save.h,
lookup.cc, ls-ascii-helper.cc, ls-ascii-helper.h, ls-oct-text.cc, ls-utils.cc,
ls-utils.h, lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex-private.h,
mex.cc, mgorth.cc, nproc.cc, oct-fstrm.cc, oct-fstrm.h, oct-hdf5-types.cc,
oct-hdf5-types.h, oct-hist.cc, oct-hist.h, oct-iostrm.cc, oct-iostrm.h,
oct-opengl.h, oct-prcstrm.cc, oct-prcstrm.h, oct-procbuf.cc, oct-procbuf.h,
oct-process.cc, oct-process.h, oct-stdstrm.h, oct-stream.cc, oct-stream.h,
oct-strstrm.cc, oct-strstrm.h, oct-tex-lexer.in.ll, oct-tex-parser.yy,
ordqz.cc, ordschur.cc, pager.cc, pager.h, pinv.cc, pow2.cc, pr-flt-fmt.cc,
pr-output.cc, procstream.cc, procstream.h, psi.cc, qr.cc, quad.cc, quadcc.cc,
qz.cc, rand.cc, rcond.cc, regexp.cc, schur.cc, settings.cc, settings.h,
sighandlers.cc, sighandlers.h, sparse-xdiv.cc, sparse-xdiv.h, sparse-xpow.cc,
sparse-xpow.h, sparse.cc, spparms.cc, sqrtm.cc, stack-frame.cc, stack-frame.h,
stream-euler.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc, sylvester.cc,
symbfact.cc, syminfo.cc, syminfo.h, symrcm.cc, symrec.cc, symrec.h,
symscope.cc, symscope.h, symtab.cc, symtab.h, syscalls.cc, sysdep.cc, sysdep.h,
text-engine.cc, text-engine.h, text-renderer.cc, text-renderer.h, time.cc,
toplev.cc, tril.cc, tsearch.cc, typecast.cc, url-handle-manager.cc,
url-handle-manager.h, urlwrite.cc, utils.cc, utils.h, variables.cc,
variables.h, xdiv.cc, xdiv.h, xnorm.cc, xnorm.h, xpow.cc, xpow.h,
__delaunayn__.cc, __fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __ode15__.cc, __voronoi__.cc, audiodevinfo.cc,
audioread.cc, convhulln.cc, fftw.cc, gzip.cc, mk-build-env-features.sh,
mk-builtins.pl, cdef-class.cc, cdef-class.h, cdef-fwd.h, cdef-manager.cc,
cdef-manager.h, cdef-method.cc, cdef-method.h, cdef-object.cc, cdef-object.h,
cdef-package.cc, cdef-package.h, cdef-property.cc, cdef-property.h,
cdef-utils.cc, cdef-utils.h, ov-base.cc, ov-base.h, ov-bool-mat.cc,
ov-builtin.h, ov-cell.cc, ov-class.cc, ov-class.h, ov-classdef.cc,
ov-classdef.h, ov-complex.cc, ov-fcn-handle.cc, ov-fcn-handle.h, ov-fcn.h,
ov-java.cc, ov-java.h, ov-mex-fcn.h, ov-null-mat.cc, ov-oncleanup.cc,
ov-struct.cc, ov-typeinfo.cc, ov-typeinfo.h, ov-usr-fcn.cc, ov-usr-fcn.h,
ov.cc, ov.h, octave.cc, octave.h, mk-ops.sh, op-b-b.cc, op-b-bm.cc,
op-b-sbm.cc, op-bm-b.cc, op-bm-bm.cc, op-bm-sbm.cc, op-cdm-cdm.cc, op-cell.cc,
op-chm.cc, op-class.cc, op-cm-cm.cc, op-cm-cs.cc, op-cm-m.cc, op-cm-s.cc,
op-cm-scm.cc, op-cm-sm.cc, op-cs-cm.cc, op-cs-cs.cc, op-cs-m.cc, op-cs-s.cc,
op-cs-scm.cc, op-cs-sm.cc, op-dm-dm.cc, op-dm-scm.cc, op-dm-sm.cc,
op-dm-template.cc, op-dms-template.cc, op-fcdm-fcdm.cc, op-fcm-fcm.cc,
op-fcm-fcs.cc, op-fcm-fm.cc, op-fcm-fs.cc, op-fcn.cc, op-fcs-fcm.cc,
op-fcs-fcs.cc, op-fcs-fm.cc, op-fcs-fs.cc, op-fdm-fdm.cc, op-fm-fcm.cc,
op-fm-fcs.cc, op-fm-fm.cc, op-fm-fs.cc, op-fs-fcm.cc, op-fs-fcs.cc,
op-fs-fm.cc, op-fs-fs.cc, op-i16-i16.cc, op-i32-i32.cc, op-i64-i64.cc,
op-i8-i8.cc, op-int-concat.cc, op-m-cm.cc, op-m-cs.cc, op-m-m.cc, op-m-s.cc,
op-m-scm.cc, op-m-sm.cc, op-mi.cc, op-pm-pm.cc, op-pm-scm.cc, op-pm-sm.cc,
op-pm-template.cc, op-range.cc, op-s-cm.cc, op-s-cs.cc, op-s-m.cc, op-s-s.cc,
op-s-scm.cc, op-s-sm.cc, op-sbm-b.cc, op-sbm-bm.cc, op-sbm-sbm.cc,
op-scm-cm.cc, op-scm-cs.cc, op-scm-m.cc, op-scm-s.cc, op-scm-scm.cc,
op-scm-sm.cc, op-sm-cm.cc, op-sm-cs.cc, op-sm-m.cc, op-sm-s.cc, op-sm-scm.cc,
op-sm-sm.cc, op-str-m.cc, op-str-s.cc, op-str-str.cc, op-struct.cc,
op-ui16-ui16.cc, op-ui32-ui32.cc, op-ui64-ui64.cc, op-ui8-ui8.cc, ops.h,
anon-fcn-validator.cc, anon-fcn-validator.h, bp-table.cc, bp-table.h,
comment-list.cc, comment-list.h, filepos.h, lex.h, lex.ll, oct-lvalue.cc,
oct-lvalue.h, oct-parse.yy, parse.h, profiler.cc, profiler.h,
pt-anon-scopes.cc, pt-anon-scopes.h, pt-arg-list.cc, pt-arg-list.h,
pt-args-block.cc, pt-args-block.h, pt-array-list.cc, pt-array-list.h,
pt-assign.cc, pt-assign.h, pt-binop.cc, pt-binop.h, pt-bp.cc, pt-bp.h,
pt-cbinop.cc, pt-cbinop.h, pt-cell.cc, pt-cell.h, pt-check.cc, pt-check.h,
pt-classdef.cc, pt-classdef.h, pt-cmd.h, pt-colon.cc, pt-colon.h, pt-const.cc,
pt-const.h, pt-decl.cc, pt-decl.h, pt-eval.cc, pt-eval.h, pt-except.cc,
pt-except.h, pt-exp.cc, pt-exp.h, pt-fcn-handle.cc, pt-fcn-handle.h, pt-id.cc,
pt-id.h, pt-idx.cc, pt-idx.h, pt-jump.h, pt-loop.cc, pt-loop.h, pt-mat.cc,
pt-mat.h, pt-misc.cc, pt-misc.h, pt-pr-code.cc, pt-pr-code.h, pt-select.cc,
pt-select.h, pt-spmd.cc, pt-spmd.h, pt-stmt.cc, pt-stmt.h, pt-tm-const.cc,
pt-tm-const.h, pt-unop.cc, pt-unop.h, pt-vm-eval.cc, pt-walk.cc, pt-walk.h,
pt.cc, pt.h, token.cc, token.h, Range.cc, Range.h, idx-vector.cc, idx-vector.h,
range-fwd.h, CollocWt.cc, CollocWt.h, aepbalance.cc, aepbalance.h, chol.cc,
chol.h, gepbalance.cc, gepbalance.h, gsvd.cc, gsvd.h, hess.cc, hess.h,
lo-mappers.cc, lo-mappers.h, lo-specfun.cc, lo-specfun.h, lu.cc, lu.h,
oct-convn.cc, oct-convn.h, oct-fftw.cc, oct-fftw.h, oct-norm.cc, oct-norm.h,
oct-rand.cc, oct-rand.h, oct-spparms.cc, oct-spparms.h, qr.cc, qr.h, qrp.cc,
qrp.h, randgamma.cc, randgamma.h, randmtzig.cc, randmtzig.h, randpoisson.cc,
randpoisson.h, schur.cc, schur.h, sparse-chol.cc, sparse-chol.h, sparse-lu.cc,
sparse-lu.h, sparse-qr.cc, sparse-qr.h, svd.cc, svd.h, child-list.cc,
child-list.h, dir-ops.cc, dir-ops.h, file-ops.cc, file-ops.h, file-stat.cc,
file-stat.h, lo-sysdep.cc, lo-sysdep.h, lo-sysinfo.cc, lo-sysinfo.h,
mach-info.cc, mach-info.h, oct-env.cc, oct-env.h, oct-group.cc, oct-group.h,
oct-password.cc, oct-password.h, oct-syscalls.cc, oct-syscalls.h, oct-time.cc,
oct-time.h, oct-uname.cc, oct-uname.h, action-container.cc, action-container.h,
base-list.h, cmd-edit.cc, cmd-edit.h, cmd-hist.cc, cmd-hist.h, f77-fcn.h,
file-info.cc, file-info.h, lo-array-errwarn.cc, lo-array-errwarn.h, lo-hash.cc,
lo-hash.h, lo-ieee.h, lo-regexp.cc, lo-regexp.h, lo-utils.cc, lo-utils.h,
oct-base64.cc, oct-base64.h, oct-glob.cc, oct-glob.h, oct-inttypes.h,
oct-mutex.cc, oct-mutex.h, oct-refcount.h, oct-shlib.cc, oct-shlib.h,
oct-sparse.cc, oct-sparse.h, oct-string.h, octave-preserve-stream-state.h,
pathsearch.cc, pathsearch.h, quit.cc, quit.h, unwind-prot.cc, unwind-prot.h,
url-transfer.cc, url-transfer.h : Use new macros to begin/end C++ namespaces.
author | Rik <rik@octave.org> |
---|---|
date | Thu, 01 Dec 2022 14:23:45 -0800 |
parents | 83f9f8bda883 |
children | 597f3ee61a48 |
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//////////////////////////////////////////////////////////////////////// // // Copyright (C) 2008-2022 The Octave Project Developers // // See the file COPYRIGHT.md in the top-level directory of this // distribution or <https://octave.org/copyright/>. // // This file is part of Octave. // // Octave is free software: you can redistribute it and/or modify it // under the terms of the GNU General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // Octave is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // // You should have received a copy of the GNU General Public License // along with Octave; see the file COPYING. If not, see // <https://www.gnu.org/licenses/>. // //////////////////////////////////////////////////////////////////////// #if defined (HAVE_CONFIG_H) # include "config.h" #endif #include "defun.h" #include "error.h" #include "errwarn.h" #include "mach-info.h" #include "ov.h" #include "ovl.h" #include "utils.h" OCTAVE_BEGIN_NAMESPACE(octave) static inline bool is_little_endian (bool is_float) { return ((is_float && (mach_info::native_float_format () == mach_info::flt_fmt_ieee_little_endian)) || mach_info::words_little_endian ()); } static uint8_t hex2nibble (unsigned char ch) { unsigned char val = 0; if (! isxdigit (ch)) error ("hex2num: invalid character '%c' found in string S", ch); if (ch >= 'a') val = static_cast<unsigned char> (ch - 'a' + 10); else if (ch >= 'A') val = static_cast<unsigned char> (ch - 'A' + 10); else val = static_cast<unsigned char> (ch - '0'); return val; } static void hex2num (const std::string& hex, void *num, std::size_t nbytes, bool swap_bytes) { unsigned char *cp = reinterpret_cast<unsigned char *> (num); const std::size_t nc = hex.length (); const std::size_t nchars = 2 * nbytes; if (nc > nchars) error ("hex2num: S must be no more than %zd characters", nchars); std::size_t j = 0; for (std::size_t i = 0; i < nbytes; i++) { std::size_t k = (swap_bytes ? nbytes - i - 1 : i); unsigned char ch1 = (j < nc) ? hex[j++] : '0'; unsigned char ch2 = (j < nc) ? hex[j++] : '0'; cp[k] = (hex2nibble (ch1) << 4) + hex2nibble (ch2); } } template <typename T> Array<T> hex2num (const Array<std::string>& val, bool swap_bytes) { octave_idx_type nel = val.numel (); Array<T> m (val.dims ()); std::size_t nbytes = sizeof (T); for (octave_idx_type i = 0; i < nel; i++) { T num; hex2num (val.xelem (i), &num, nbytes, swap_bytes); m(i) = num; } return m; } DEFUN (hex2num, args, , doc: /* -*- texinfo -*- @deftypefn {} {@var{n} =} hex2num (@var{s}) @deftypefnx {} {@var{n} =} hex2num (@var{s}, @var{class}) Typecast a hexadecimal character array or cell array of strings to an array of numbers. By default, the input array is interpreted as a hexadecimal number representing a double precision value. If fewer than 16 characters are given the strings are right padded with @qcode{'0'} characters. Given a string matrix, @code{hex2num} treats each row as a separate number. @example @group hex2num (["4005bf0a8b145769"; "4024000000000000"]) @result{} [2.7183; 10.000] @end group @end example The optional second argument @var{class} may be used to cause the input array to be interpreted as a different value type. Possible values are @multitable {Option} {Characters} @headitem Option @tab Characters @item @qcode{"int8"} @tab 2 @item @qcode{"uint8"} @tab 2 @item @qcode{"int16"} @tab 4 @item @qcode{"uint16"} @tab 4 @item @qcode{"int32"} @tab 8 @item @qcode{"uint32"} @tab 8 @item @qcode{"int64"} @tab 16 @item @qcode{"uint64"} @tab 16 @item @qcode{"char"} @tab 2 @item @qcode{"single"} @tab 8 @item @qcode{"double"} @tab 16 @end multitable For example: @example @group hex2num (["402df854"; "41200000"], "single") @result{} [2.7183; 10.000] @end group @end example @seealso{num2hex, hex2dec, dec2hex} @end deftypefn */) { octave_value retval; int nargin = args.length (); if (nargin < 1 || nargin > 2) print_usage (); std::string type = "double"; if (nargin == 2) type = args(1).xstring_value ("hex2num: CLASS must be a string"); Array<std::string> val = args(0).cellstr_value (); // We always use big-endian order for hex digits. bool is_float = type == "single" || type == "double"; bool swap_bytes = is_little_endian (is_float); if (type == "int8") retval = octave_value (hex2num<octave_int8> (val, swap_bytes)); else if (type == "uint8") retval = octave_value (hex2num<octave_uint8> (val, swap_bytes)); else if (type == "int16") retval = octave_value (hex2num<octave_int16> (val, swap_bytes)); else if (type == "uint16") retval = octave_value (hex2num<octave_uint16> (val, swap_bytes)); else if (type == "int32") retval = octave_value (hex2num<octave_int32> (val, swap_bytes)); else if (type == "uint32") retval = octave_value (hex2num<octave_uint32> (val, swap_bytes)); else if (type == "int64") retval = octave_value (hex2num<octave_int64> (val, swap_bytes)); else if (type == "uint64") retval = octave_value (hex2num<octave_uint64> (val, swap_bytes)); else if (type == "char") retval = octave_value (hex2num<char> (val, swap_bytes)); else if (type == "single") retval = octave_value (hex2num<float> (val, swap_bytes)); else if (type == "double") retval = octave_value (hex2num<double> (val, swap_bytes)); else error ("hex2num: unrecognized CLASS '%s'", type.c_str ()); return retval; } /* %!assert (hex2num (["c00";"bff";"000";"3ff";"400"]), [-2:2]') %!assert (hex2num (["c00";"bf8";"000";"3f8";"400"], "single"), single([-2:2])') %!assert (hex2num ("ff", "uint8"), intmax ("uint8")) %!assert (hex2num ("ffff", "uint16"), intmax ("uint16")) %!assert (hex2num ("ffffffff", "uint32"), intmax ("uint32")) %!assert (hex2num ("ffffffff", "uint32"), intmax ("uint32")) %!assert (hex2num ("ffffffffffffffff", "uint64"), intmax ("uint64")) */ static inline unsigned char nibble2hex (unsigned char ch) { if (ch >= 10) ch += 'a' - 10; else ch += '0'; return ch; } static inline void num2hex (const void *p, std::size_t n, char *hex, bool swap_bytes) { const unsigned char *cp = reinterpret_cast<const unsigned char *> (p); std::size_t k = 0; for (std::size_t i = 0; i < n; i++) { std::size_t j = (swap_bytes ? n - i - 1 : i); unsigned char ch = cp[j]; hex[k++] = nibble2hex ((ch >> 4) & 0xF); hex[k++] = nibble2hex (ch & 0xF); } } template <typename T> Cell num2hex (const Array<T>& v, bool swap_bytes) { const std::size_t nbytes = sizeof (T); const std::size_t nchars = 2 * nbytes; octave_idx_type nel = v.numel (); string_vector sv (nel); const T *pv = v.data (); for (octave_idx_type i = 0; i < nel; i++) { char hex[nchars]; num2hex (pv++, nbytes, hex, swap_bytes); sv[i] = std::string (hex, nchars); } return Cell (v.dims (), sv); } DEFUN (num2hex, args, , doc: /* -*- texinfo -*- @deftypefn {} {@var{s} =} num2hex (@var{n}) @deftypefnx {} {@var{s} =} num2hex (@var{n}, "cell") Convert a numeric array to an array of hexadecimal strings. For example: @example @group num2hex ([-1, 1, e, Inf]) @result{} "bff0000000000000 3ff0000000000000 4005bf0a8b145769 7ff0000000000000" @end group @end example If the argument @var{n} is a single precision number or vector, the returned string has a length of 8. For example: @example @group num2hex (single ([-1, 1, e, Inf])) @result{} "bf800000 3f800000 402df854 7f800000" @end group @end example With the optional second argument @qcode{"cell"}, return a cell array of strings instead of a character array. @seealso{hex2num, hex2dec, dec2hex} @end deftypefn */) { int nargin = args.length (); if (nargin < 1 || nargin > 2) print_usage (); bool as_cell = false; if (nargin == 2) { std::string opt = args(1).xstring_value ("num2hex: second argument must be a string"); if (opt == "cell") as_cell = true; else error ("num2hex: unrecognized option '%s'", opt.c_str ()); } octave_value val = args(0); if (val.iscomplex ()) error ("num2hex: N must be real"); Cell result; // We always use big-endian order for hex digits. bool is_float = val.is_single_type () || val.is_double_type (); bool swap_bytes = is_little_endian (is_float); if (val.is_int8_type ()) result = num2hex (val.int8_array_value (), swap_bytes); else if (val.is_int16_type ()) result = num2hex<octave_int16> (val.int16_array_value (), swap_bytes); else if (val.is_int32_type ()) result = num2hex<octave_int32> (val.int32_array_value (), swap_bytes); else if (val.is_int64_type ()) result = num2hex<octave_int64> (val.int64_array_value (), swap_bytes); else if (val.is_uint8_type ()) result = num2hex<octave_uint8> (val.uint8_array_value (), swap_bytes); else if (val.is_uint16_type ()) result = num2hex<octave_uint16> (val.uint16_array_value (), swap_bytes); else if (val.is_uint32_type ()) result = num2hex<octave_uint32> (val.uint32_array_value (), swap_bytes); else if (val.is_uint64_type ()) result = num2hex<octave_uint64> (val.uint64_array_value (), swap_bytes); else if (val.is_char_matrix ()) result = num2hex<char> (val.char_array_value (), swap_bytes); else if (val.is_single_type ()) result = num2hex<float> (val.float_vector_value (), swap_bytes); else if (val.is_double_type ()) result = num2hex<double> (val.vector_value (), swap_bytes); else err_wrong_type_arg ("num2hex", val); return (as_cell ? octave_value (result) : octave_value (result.string_vector_value ())); } /* %!assert (num2hex (-2:2), %! ["c000000000000000";"bff0000000000000";"0000000000000000";"3ff0000000000000";"4000000000000000"]) %!assert (num2hex (single (-2:2)), %! ["c0000000";"bf800000";"00000000";"3f800000";"40000000"]) %!assert (num2hex (intmax ("uint8")), "ff") %!assert (num2hex (intmax ("uint16")), "ffff") %!assert (num2hex (intmax ("uint32")), "ffffffff") %!assert (num2hex (intmax ("uint32")), "ffffffff") %!assert (num2hex (intmax ("uint64")), "ffffffffffffffff") %!assert (hex2num (num2hex (pi)), pi) %!assert (hex2num (num2hex (single (pi)), "single"), single (pi)) %!error num2hex () %!error num2hex (1,2) %!error num2hex (1,"foo") %!error num2hex (1,2,3) %!error num2hex (1j) */ OCTAVE_END_NAMESPACE(octave)