Mercurial > octave
annotate liboctave/util/lo-utils.cc @ 21724:aba2e6293dd8
use "#if ..." consistently instead of "#ifdef" and "#ifndef"
* configure.ac, Doxyfile.in, make_int.cc, Backend.cc, BaseControl.cc,
ButtonControl.cc, Canvas.cc, CheckBoxControl.cc, Container.cc,
ContextMenu.cc, EditControl.cc, Figure.cc, FigureWindow.cc,
GLCanvas.cc, KeyMap.cc, ListBoxControl.cc, Logger.cc, Menu.cc,
MouseModeActionGroup.cc, Object.cc, ObjectFactory.cc,
ObjectProxy.cc, Panel.cc, PopupMenuControl.cc, PushButtonControl.cc,
PushTool.cc, QtHandlesUtils.cc, RadioButtonControl.cc,
SliderControl.cc, TextControl.cc, TextEdit.cc,
ToggleButtonControl.cc, ToggleTool.cc, ToolBar.cc, __init_qt__.cc,
annotation-dialog.cc, gl-select.cc, module.mk, color-picker.cc,
dialog.cc, documentation-dock-widget.cc, files-dock-widget.cc,
find-files-dialog.cc, find-files-model.cc, history-dock-widget.cc,
liboctgui-build-info.in.cc, file-editor-tab.cc, file-editor.cc,
find-dialog.cc, marker.cc, marker.h, octave-qscintilla.cc,
octave-txt-lexer.cc, main-window.cc, octave-cmd.cc,
octave-dock-widget.cc, octave-gui.cc, octave-interpreter.cc,
octave-qt-link.cc, parser.cc, webinfo.cc, resource-manager.cc,
settings-dialog.cc, shortcut-manager.cc, terminal-dock-widget.cc,
thread-manager.cc, welcome-wizard.cc, workspace-model.cc,
workspace-view.cc, build-env.in.cc, Cell.cc, __contourc__.cc,
__dispatch__.cc, __dsearchn__.cc, __ichol__.cc, __ilu__.cc,
__lin_interpn__.cc, __luinc__.cc, __magick_read__.cc,
__pchip_deriv__.cc, __qp__.cc, balance.cc, besselj.cc, betainc.cc,
bitfcns.cc, bsxfun.cc, c-file-ptr-stream.cc, c-file-ptr-stream.h,
cdisplay.c, cdisplay.h, cellfun.cc, coct-hdf5-types.c, colloc.cc,
comment-list.cc, conv2.cc, daspk.cc, dasrt.cc, dassl.cc, data.cc,
debug.cc, defaults.cc, defaults.in.h, defun.cc, det.cc, dirfns.cc,
display.cc, dlmread.cc, dot.cc, dynamic-ld.cc, eig.cc, ellipj.cc,
error.cc, errwarn.cc, event-queue.cc, fft.cc, fft2.cc, fftn.cc,
file-io.cc, filter.cc, find.cc, ft-text-renderer.cc, gammainc.cc,
gcd.cc, getgrent.cc, getpwent.cc, getrusage.cc, givens.cc,
gl-render.cc, gl2ps-print.cc, graphics.cc, gripes.cc, hash.cc,
help.cc, hess.cc, hex2num.cc, input.cc, inv.cc, jit-ir.cc, jit-ir.h,
jit-typeinfo.cc, jit-typeinfo.h, jit-util.cc, jit-util.h, kron.cc,
load-path.cc, load-save.cc, lookup.cc, ls-ascii-helper.cc,
ls-hdf5.cc, ls-mat-ascii.cc, ls-mat4.cc, ls-mat5.cc,
ls-oct-binary.cc, ls-oct-text.cc, ls-oct-text.h, ls-utils.cc,
lsode.cc, lu.cc, mappers.cc, matrix_type.cc, max.cc, mex.cc, mex.h,
mexproto.h, mgorth.cc, nproc.cc, oct-errno.in.cc, oct-fstrm.cc,
oct-hdf5-types.cc, oct-hdf5-types.h, oct-hist.cc, oct-iostrm.cc,
oct-lvalue.cc, oct-map.cc, oct-prcstrm.cc, oct-procbuf.cc,
oct-stdstrm.h, oct-stream.cc, oct-strstrm.cc, oct-tex-lexer.in.ll,
oct-tex-parser.in.yy, octave-link.cc, ordschur.cc, pager.cc,
pinv.cc, pr-output.cc, procstream.cc, profiler.cc, psi.cc,
pt-jit.cc, pt-jit.h, quad.cc, quadcc.cc, qz.cc, rand.cc, rcond.cc,
regexp.cc, schur.cc, sighandlers.cc, sighandlers.h, siglist.c,
siglist.h, sparse-xdiv.cc, sparse-xpow.cc, sparse.cc, spparms.cc,
sqrtm.cc, str2double.cc, strfind.cc, strfns.cc, sub2ind.cc, svd.cc,
sylvester.cc, symtab.cc, syscalls.cc, sysdep.cc, text-renderer.cc,
time.cc, toplev.cc, tril.cc, tsearch.cc, txt-eng.cc, typecast.cc,
urlwrite.cc, utils.cc, variables.cc, xdiv.cc, xgl2ps.c, xnorm.cc,
xpow.cc, zfstream.cc, zfstream.h, __delaunayn__.cc, __eigs__.cc,
__fltk_uigetfile__.cc, __glpk__.cc, __init_fltk__.cc,
__init_gnuplot__.cc, __osmesa_print__.cc, __voronoi__.cc, amd.cc,
audiodevinfo.cc, audioread.cc, ccolamd.cc, chol.cc, colamd.cc,
convhulln.cc, dmperm.cc, fftw.cc, qr.cc, symbfact.cc, symrcm.cc,
liboctinterp-build-info.in.cc, mkbuiltins, mkops, ov-base.cc,
ov-bool-mat.cc, ov-bool-sparse.cc, ov-bool.cc, ov-builtin.cc,
ov-cell.cc, ov-ch-mat.cc, ov-class.cc, ov-classdef.cc, ov-colon.cc,
ov-complex.cc, ov-cs-list.cc, ov-cx-diag.cc, ov-cx-mat.cc,
ov-cx-sparse.cc, ov-dld-fcn.cc, ov-fcn-handle.cc, ov-fcn-inline.cc,
ov-fcn.cc, ov-float.cc, ov-flt-complex.cc, ov-flt-cx-diag.cc,
ov-flt-cx-mat.cc, ov-flt-re-diag.cc, ov-flt-re-mat.cc, ov-int16.cc,
ov-int32.cc, ov-int64.cc, ov-int8.cc, ov-java.cc, ov-lazy-idx.cc,
ov-mex-fcn.cc, ov-null-mat.cc, ov-oncleanup.cc, ov-perm.cc,
ov-range.cc, ov-re-diag.cc, ov-re-mat.cc, ov-re-sparse.cc,
ov-scalar.cc, ov-str-mat.cc, ov-struct.cc, ov-typeinfo.cc,
ov-uint16.cc, ov-uint32.cc, ov-uint64.cc, ov-uint8.cc,
ov-usr-fcn.cc, ov-usr-fcn.h, ov.cc, ovl.cc, octave.cc, octave.h,
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-cdm-cm.cc, op-cdm-dm.cc,
op-cdm-m.cc, op-cell.cc, op-chm.cc, op-class.cc, op-cm-cdm.cc,
op-cm-cm.cc, op-cm-cs.cc, op-cm-dm.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-cdm.cc, op-dm-cm.cc,
op-dm-dm.cc, op-dm-m.cc, op-dm-scm.cc, op-dm-sm.cc,
op-dm-template.cc, op-dms-template.cc, op-double-conv.cc,
op-fcdm-fcdm.cc, op-fcdm-fcm.cc, op-fcdm-fdm.cc, op-fcdm-fm.cc,
op-fcm-fcdm.cc, op-fcm-fcm.cc, op-fcm-fcs.cc, op-fcm-fdm.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-fcdm.cc, op-fdm-fcm.cc,
op-fdm-fdm.cc, op-fdm-fm.cc, op-float-conv.cc, op-fm-fcdm.cc,
op-fm-fcm.cc, op-fm-fcs.cc, op-fm-fdm.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-int-conv.cc, op-m-cdm.cc, op-m-cm.cc, op-m-cs.cc, op-m-dm.cc,
op-m-m.cc, op-m-s.cc, op-m-scm.cc, op-m-sm.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,
lex.ll, oct-parse.in.yy, pt-arg-list.cc, pt-array-list.cc,
pt-assign.cc, pt-binop.cc, pt-bp.cc, pt-cbinop.cc, pt-cell.cc,
pt-check.cc, pt-classdef.cc, pt-cmd.cc, pt-colon.cc, pt-const.cc,
pt-decl.cc, pt-eval.cc, pt-except.cc, pt-exp.cc, pt-fcn-handle.cc,
pt-funcall.cc, pt-id.cc, pt-idx.cc, pt-jump.cc, pt-loop.cc,
pt-loop.h, pt-mat.cc, pt-misc.cc, pt-pr-code.cc, pt-select.cc,
pt-stmt.cc, pt-unop.cc, pt.cc, token.cc, Array-jit.cc, Array-tc.cc,
version.cc, Array-C.cc, Array-b.cc, Array-ch.cc, Array-d.cc,
Array-f.cc, Array-fC.cc, Array-i.cc, Array-idx-vec.cc, Array-s.cc,
Array-str.cc, Array-util.cc, Array-voidp.cc, Array.cc,
CColVector.cc, CDiagMatrix.cc, CMatrix.cc, CNDArray.cc,
CRowVector.cc, CSparse.cc, MArray-C.cc, MArray-d.cc, MArray-f.cc,
MArray-fC.cc, MArray-i.cc, MArray-s.cc, MSparse-C.cc, MSparse-d.cc,
MatrixType.cc, PermMatrix.cc, Range.cc, Sparse-C.cc, Sparse-b.cc,
Sparse-d.cc, boolMatrix.cc, boolNDArray.cc, boolSparse.cc,
chMatrix.cc, chNDArray.cc, dColVector.cc, dDiagMatrix.cc,
dMatrix.cc, dNDArray.cc, dRowVector.cc, dSparse.cc, dim-vector.cc,
dim-vector.h, fCColVector.cc, fCDiagMatrix.cc, fCMatrix.cc,
fCNDArray.cc, fCRowVector.cc, fColVector.cc, fDiagMatrix.cc,
fMatrix.cc, fNDArray.cc, fRowVector.cc, idx-vector.cc,
int16NDArray.cc, int32NDArray.cc, int64NDArray.cc, int8NDArray.cc,
uint16NDArray.cc, uint32NDArray.cc, uint64NDArray.cc,
uint8NDArray.cc, Faddeeva.cc, blaswrap.c, cquit.c, f77-extern.cc,
f77-fcn.c, f77-fcn.h, lo-error.c, lo-error.h, quit.cc, quit.h,
liboctave-build-info.in.cc, CollocWt.cc, DASPK.cc, DASRT.cc,
DASSL.cc, EIG.cc, LSODE.cc, ODES.cc, Quad.cc, aepbalance.cc,
chol.cc, eigs-base.cc, fEIG.cc, gepbalance.cc, hess.cc,
lo-mappers.cc, lo-specfun.cc, lu.cc, oct-convn.cc, oct-fftw.cc,
oct-norm.cc, oct-rand.cc, oct-spparms.cc, qr.cc, qrp.cc,
randmtzig.cc, randpoisson.cc, schur.cc, sparse-chol.cc,
sparse-dmsolve.cc, sparse-lu.cc, sparse-qr.cc, svd.cc, mk-ops.awk,
mx-defs.h, dir-ops.cc, file-ops.cc, file-stat.cc, lo-sysdep.cc,
mach-info.cc, oct-env.cc, oct-group.cc, oct-passwd.cc,
oct-syscalls.cc, oct-time.cc, oct-uname.cc, pathlen.h, syswait.h,
cmd-edit.cc, cmd-hist.cc, data-conv.cc, f2c-main.c, glob-match.cc,
kpse.cc, lo-array-errwarn.cc, lo-array-gripes.cc, lo-cutils.c,
lo-cutils.h, lo-ieee.cc, lo-ieee.h, lo-regexp.cc, lo-utils.cc,
oct-base64.cc, oct-glob.cc, oct-inttypes.cc, oct-inttypes.h,
oct-locbuf.cc, oct-mutex.cc, oct-rl-edit.c, oct-rl-edit.h,
oct-rl-hist.c, oct-rl-hist.h, oct-shlib.cc, oct-sort.cc,
pathsearch.cc, singleton-cleanup.cc, sparse-sort.cc, sparse-util.cc,
statdefs.h, str-vec.cc, unwind-prot.cc, url-transfer.cc,
acinclude.m4, display-available.c, display-available.h, main-cli.cc,
main-gui.cc, main.in.cc, mkoctfile.in.cc, octave-build-info.in.cc,
octave-config.in.cc, shared-fcns.h:
Use "#if ..." consistently instead of "#ifdef" and "#ifndef".
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 17 May 2016 12:09:30 -0400 |
| parents | bae585228161 |
| children | 2aef506f3fec |
| rev | line source |
|---|---|
| 1993 | 1 // utils.cc |
| 1967 | 2 /* |
| 3 | |
|
19697
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4 Copyright (C) 1996-2015 John W. Eaton |
| 1967 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 1967 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 1967 | 21 |
| 22 */ | |
| 23 | |
|
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24 #if defined (HAVE_CONFIG_H) |
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25 # include "config.h" |
| 1967 | 26 #endif |
| 27 | |
| 6907 | 28 #include <cctype> |
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29 #include <cstdlib> |
| 2926 | 30 #include <cstdio> |
| 7048 | 31 #include <cstring> |
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32 #include <cfloat> |
| 1967 | 33 |
| 6490 | 34 #include <limits> |
| 2926 | 35 #include <string> |
| 36 | |
| 37 #include <sys/types.h> | |
| 38 #include <unistd.h> | |
| 39 | |
|
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40 #include "quit.h" |
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41 |
| 2926 | 42 #include "lo-error.h" |
| 4130 | 43 #include "lo-ieee.h" |
| 1967 | 44 #include "lo-mappers.h" |
| 45 #include "lo-utils.h" | |
| 46 | |
|
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47 bool xis_int_or_inf_or_nan (double x) |
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48 { return xisnan (x) || D_NINT (x) == x; } |
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49 |
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50 bool xis_one_or_zero (double x) |
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51 { return x == 0 || x == 1; } |
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52 |
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53 bool xis_zero (double x) |
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54 { return x == 0; } |
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55 |
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56 bool xtoo_large_for_float (double x) |
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57 { |
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58 return (xfinite (x) && fabs (x) > std::numeric_limits<float>::max ()); |
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59 } |
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60 |
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61 bool xtoo_large_for_float (const Complex& x) |
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62 { |
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63 return (xtoo_large_for_float (x.real ()) |
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64 || xtoo_large_for_float (x.imag ())); |
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65 } |
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66 |
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67 bool xis_int_or_inf_or_nan (float x) |
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68 { return xisnan (x) || D_NINT (x) == x; } |
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69 |
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70 bool xis_one_or_zero (float x) |
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71 { return x == 0 || x == 1; } |
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72 |
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73 bool xis_zero (float x) |
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74 { return x == 0; } |
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75 |
| 2926 | 76 // Save a string. |
| 77 | |
| 78 char * | |
| 79 strsave (const char *s) | |
| 80 { | |
| 81 if (! s) | |
| 82 return 0; | |
| 83 | |
| 84 int len = strlen (s); | |
| 85 char *tmp = new char [len+1]; | |
| 86 tmp = strcpy (tmp, s); | |
| 87 return tmp; | |
| 88 } | |
| 89 | |
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90 // This function was adapted from xputenv from Karl Berry's kpathsearch |
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91 // library. |
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92 |
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93 // FIXME: make this do the right thing if we don't have a SMART_PUTENV. |
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94 |
| 2926 | 95 void |
| 3504 | 96 octave_putenv (const std::string& name, const std::string& value) |
| 2926 | 97 { |
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98 int new_len = name.length () + value.length () + 2; |
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99 |
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100 // FIXME: This leaks memory, but so would a call to setenv. |
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101 // Short of extreme measures to track memory, altering the environment |
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102 // always leaks memory, but the saving grace is that the leaks are small. |
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103 char *new_item = static_cast<char*> (gnulib::malloc (new_len)); |
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104 |
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105 sprintf (new_item, "%s=%s", name.c_str (), value.c_str ()); |
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106 |
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107 // As far as I can see there's no way to distinguish between the |
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108 // various errors; putenv doesn't have errno values. |
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109 |
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110 if (gnulib::putenv (new_item) < 0) |
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111 (*current_liboctave_error_handler) ("putenv (%s) failed", new_item); |
| 2926 | 112 } |
| 113 | |
| 3504 | 114 std::string |
| 2926 | 115 octave_fgets (FILE *f) |
| 116 { | |
| 4527 | 117 bool eof; |
| 118 return octave_fgets (f, eof); | |
| 119 } | |
| 120 | |
| 121 std::string | |
| 122 octave_fgets (FILE *f, bool& eof) | |
| 123 { | |
| 124 eof = false; | |
| 125 | |
| 3504 | 126 std::string retval; |
| 2926 | 127 |
| 128 int grow_size = 1024; | |
| 129 int max_size = grow_size; | |
| 130 | |
| 10411 | 131 char *buf = static_cast<char *> (gnulib::malloc (max_size)); |
| 2926 | 132 char *bufptr = buf; |
| 133 int len = 0; | |
| 134 | |
| 135 do | |
| 136 { | |
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137 if (gnulib::fgets (bufptr, grow_size, f)) |
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138 { |
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139 len = strlen (bufptr); |
| 2926 | 140 |
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141 if (len == grow_size - 1) |
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142 { |
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143 int tmp = bufptr - buf + grow_size - 1; |
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144 grow_size *= 2; |
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145 max_size += grow_size; |
| 10411 | 146 buf = static_cast<char *> (gnulib::realloc (buf, max_size)); |
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147 bufptr = buf + tmp; |
| 2926 | 148 |
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149 if (*(bufptr-1) == '\n') |
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150 { |
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151 *bufptr = '\0'; |
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152 retval = buf; |
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153 } |
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154 } |
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155 else if (bufptr[len-1] != '\n') |
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156 { |
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157 bufptr[len++] = '\n'; |
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158 bufptr[len] = '\0'; |
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159 retval = buf; |
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160 } |
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161 else |
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162 retval = buf; |
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163 } |
| 2926 | 164 else |
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165 { |
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166 if (len == 0) |
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167 { |
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168 eof = true; |
| 4527 | 169 |
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170 free (buf); |
| 2926 | 171 |
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172 buf = 0; |
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173 } |
| 2926 | 174 |
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175 break; |
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176 } |
| 2926 | 177 } |
| 178 while (retval.empty ()); | |
| 179 | |
| 180 if (buf) | |
| 181 free (buf); | |
| 182 | |
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183 octave_quit (); |
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184 |
| 2926 | 185 return retval; |
| 186 } | |
| 187 | |
| 3970 | 188 std::string |
| 189 octave_fgetl (FILE *f) | |
| 190 { | |
| 4527 | 191 bool eof; |
| 192 return octave_fgetl (f, eof); | |
| 193 } | |
| 194 | |
| 195 std::string | |
| 196 octave_fgetl (FILE *f, bool& eof) | |
| 197 { | |
| 198 std::string retval = octave_fgets (f, eof); | |
| 3970 | 199 |
| 200 size_t len = retval.length (); | |
| 201 | |
| 202 if (retval[len-1] == '\n') | |
| 203 retval.resize (len-1); | |
| 204 | |
| 205 return retval; | |
| 206 } | |
| 207 | |
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208 // Note that the caller is responsible for repositioning the stream on failure. |
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209 |
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210 template <typename T> |
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211 T |
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212 read_inf_nan_na (std::istream& is, char c0) |
| 4130 | 213 { |
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214 T val = 0.0; |
| 4130 | 215 |
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216 switch (c0) |
| 4130 | 217 { |
| 218 case 'i': case 'I': | |
| 219 { | |
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220 char c1 = is.get (); |
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221 if (c1 == 'n' || c1 == 'N') |
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222 { |
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223 char c2 = is.get (); |
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224 if (c2 == 'f' || c2 == 'F') |
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225 val = std::numeric_limits<T>::infinity (); |
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226 else |
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227 is.setstate (std::ios::failbit); |
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228 } |
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229 else |
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230 is.setstate (std::ios::failbit); |
| 4130 | 231 } |
| 232 break; | |
| 233 | |
| 234 case 'n': case 'N': | |
| 235 { | |
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236 char c1 = is.get (); |
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237 if (c1 == 'a' || c1 == 'A') |
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238 { |
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239 char c2 = is.get (); |
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240 if (c2 == 'n' || c2 == 'N') |
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241 val = std::numeric_limits<T>::quiet_NaN (); |
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242 else |
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243 { |
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244 val = octave::numeric_limits<T>::NA (); |
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245 if (c2 != std::istream::traits_type::eof ()) |
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246 is.putback (c2); |
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247 } |
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248 } |
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249 else |
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250 is.setstate (std::ios::failbit); |
| 4130 | 251 } |
| 252 break; | |
| 253 | |
| 254 default: | |
| 255 abort (); | |
| 256 } | |
| 257 | |
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258 return val; |
| 4130 | 259 } |
| 260 | |
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261 // Read a double value. Discard any sign on NaN and NA. |
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262 |
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263 template <typename T> |
| 4130 | 264 double |
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265 octave_read_fp_value (std::istream& is) |
| 4130 | 266 { |
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267 T val = 0.0; |
| 4130 | 268 |
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269 // FIXME: resetting stream position is likely to fail unless we are |
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270 // reading from a file. |
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271 std::ios::streampos pos = is.tellg (); |
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272 |
| 6907 | 273 char c1 = ' '; |
| 4130 | 274 |
| 6907 | 275 while (isspace (c1)) |
| 276 c1 = is.get (); | |
| 277 | |
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278 bool neg = false; |
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279 |
| 6194 | 280 switch (c1) |
| 4130 | 281 { |
| 6194 | 282 case '-': |
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283 neg = true; |
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284 // fall through... |
| 6194 | 285 |
| 286 case '+': | |
| 287 { | |
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288 char c2 = 0; |
|
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289 c2 = is.get (); |
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290 if (c2 == 'i' || c2 == 'I' || c2 == 'n' || c2 == 'N') |
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291 val = read_inf_nan_na<T> (is, c2); |
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292 else |
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293 { |
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294 is.putback (c2); |
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295 is >> val; |
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296 } |
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297 |
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298 if (neg && ! is.fail ()) |
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299 val = -val; |
| 6194 | 300 } |
| 301 break; | |
| 302 | |
| 4130 | 303 case 'i': case 'I': |
| 304 case 'n': case 'N': | |
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305 val = read_inf_nan_na<T> (is, c1); |
| 4130 | 306 break; |
| 307 | |
| 308 default: | |
| 6194 | 309 is.putback (c1); |
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310 is >> val; |
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311 break; |
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312 } |
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313 |
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314 std::ios::iostate status = is.rdstate (); |
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315 if (status & std::ios::failbit) |
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316 { |
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317 is.clear (); |
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318 is.seekg (pos); |
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319 is.setstate (status); |
| 4130 | 320 } |
| 321 | |
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322 return val; |
| 4130 | 323 } |
| 324 | |
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325 template <typename T> |
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326 std::complex<T> |
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327 octave_read_cx_fp_value (std::istream& is) |
| 4130 | 328 { |
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329 T re = 0.0; |
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330 T im = 0.0; |
| 4130 | 331 |
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332 std::complex<T> cx = 0.0; |
| 4130 | 333 |
| 6907 | 334 char ch = ' '; |
| 4130 | 335 |
| 6907 | 336 while (isspace (ch)) |
| 337 ch = is.get (); | |
| 4130 | 338 |
| 339 if (ch == '(') | |
| 340 { | |
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341 re = octave_read_value<T> (is); |
| 6897 | 342 ch = is.get (); |
| 4130 | 343 |
| 344 if (ch == ',') | |
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345 { |
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346 im = octave_read_value<T> (is); |
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347 ch = is.get (); |
| 4130 | 348 |
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349 if (ch == ')') |
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350 cx = std::complex<T> (re, im); |
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351 else |
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352 is.setstate (std::ios::failbit); |
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353 } |
| 4130 | 354 else if (ch == ')') |
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355 cx = re; |
| 4130 | 356 else |
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357 is.setstate (std::ios::failbit); |
| 4130 | 358 } |
| 359 else | |
| 360 { | |
| 361 is.putback (ch); | |
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362 cx = octave_read_value<double> (is); |
| 4130 | 363 } |
| 364 | |
| 365 return cx; | |
| 366 } | |
| 367 | |
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368 template <> OCTAVE_API double octave_read_value (std::istream& is) |
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369 { |
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370 return octave_read_fp_value<double> (is); |
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371 } |
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372 |
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373 template <> OCTAVE_API Complex octave_read_value (std::istream& is) |
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374 { |
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375 return octave_read_cx_fp_value<double> (is); |
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376 } |
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377 |
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378 template <> OCTAVE_API float octave_read_value (std::istream& is) |
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379 { |
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380 return octave_read_fp_value<float> (is); |
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381 } |
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382 |
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383 template <> OCTAVE_API FloatComplex octave_read_value (std::istream& is) |
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384 { |
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385 return octave_read_cx_fp_value<float> (is); |
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386 } |
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387 |
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388 void |
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389 octave_write_double (std::ostream& os, double d) |
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390 { |
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391 if (lo_ieee_is_NA (d)) |
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392 os << "NA"; |
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393 else if (lo_ieee_isnan (d)) |
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394 os << "NaN"; |
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395 else if (lo_ieee_isinf (d)) |
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396 os << (d < 0 ? "-Inf" : "Inf"); |
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397 else |
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398 os << d; |
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399 } |
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400 |
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401 void |
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402 octave_write_complex (std::ostream& os, const Complex& c) |
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403 { |
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404 os << "("; |
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405 octave_write_double (os, real (c)); |
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406 os << ","; |
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407 octave_write_double (os, imag (c)); |
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408 os << ")"; |
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409 } |
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410 |
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411 void |
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412 octave_write_float (std::ostream& os, float d) |
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413 { |
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414 if (lo_ieee_is_NA (d)) |
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415 os << "NA"; |
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416 else if (lo_ieee_isnan (d)) |
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417 os << "NaN"; |
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418 else if (lo_ieee_isinf (d)) |
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419 os << (d < 0 ? "-Inf" : "Inf"); |
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420 else |
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421 os << d; |
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422 } |
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423 |
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424 void |
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425 octave_write_float_complex (std::ostream& os, const FloatComplex& c) |
|
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426 { |
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427 os << "("; |
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428 octave_write_float (os, real (c)); |
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429 os << ","; |
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430 octave_write_float (os, imag (c)); |
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431 os << ")"; |
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432 } |