1 | .\" Copyright (c) 2010 Joseph Koshy |
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2 | .\" All rights reserved. |
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3 | .\" |
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5 | .\" modification, are permitted provided that the following conditions |
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6 | .\" are met: |
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7 | .\" 1. Redistributions of source code must retain the above copyright |
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9 | .\" 2. Redistributions in binary form must reproduce the above copyright |
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10 | .\" notice, this list of conditions and the following disclaimer in the |
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11 | .\" documentation and/or other materials provided with the distribution. |
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13 | .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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14 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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15 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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16 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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22 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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25 | .\" $Id: dwarf_formflag.3 3181 2015-04-10 13:22:51Z emaste $ |
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26 | .\" |
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27 | .Dd June 21, 2010 |
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28 | .Os |
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29 | .Dt DWARF_FORMFLAG 3 |
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30 | .Sh NAME |
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31 | .Nm dwarf_formflag |
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32 | .Nd return the value of a BOOLEAN class attribute |
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33 | .Sh LIBRARY |
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34 | .Lb libdwarf |
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35 | .Sh SYNOPSIS |
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36 | .In libdwarf.h |
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37 | .Ft int |
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38 | .Fo dwarf_formflag |
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39 | .Fa "Dwarf_Attribute attr" |
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40 | .Fa "Dwarf_Bool *ret" |
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41 | .Fa "Dwarf_Error *err" |
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42 | .Fc |
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43 | .Sh DESCRIPTION |
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44 | Function |
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45 | .Fn dwarf_formflag |
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46 | sets the location pointed to by argument |
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47 | .Ar ret |
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48 | to 1 if the attribute referenced by argument |
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49 | .Ar attr |
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50 | has a non-zero value, or 0 otherwise. |
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51 | The form of argument |
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52 | .Ar attr |
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53 | must be one of |
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54 | .Dv DW_FORM_flag |
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55 | or |
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56 | .Dv DW_FORM_flag_present . |
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57 | .Pp |
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58 | If argument |
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59 | .Ar err |
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60 | is not NULL, it will be used to return an error descriptor in case |
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61 | of an error. |
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62 | .Sh RETURN VALUES |
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63 | Function |
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64 | .Fn dwarf_formflag |
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65 | returns |
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66 | .Dv DW_DLV_OK |
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67 | on success. |
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68 | In case of an error, it returns |
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69 | .Dv DW_DLV_ERROR |
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70 | and sets argument |
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71 | .Ar err . |
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72 | .Sh ERRORS |
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73 | Function |
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74 | .Fn dwarf_formflag |
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75 | may fail with the following errors: |
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76 | .Bl -tag -width ".Bq Er DW_DLE_ATTR_FORM_BAD" |
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77 | .It Bq Er DW_DLE_ARGUMENT |
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78 | Either of arguments |
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79 | .Ar attr |
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80 | or |
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81 | .Ar ret |
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82 | was NULL. |
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83 | .It Bq Er DW_DLE_ATTR_FORM_BAD |
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84 | The attribute referenced by argument |
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85 | .Ar attr |
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86 | was not of a permitted kind. |
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87 | .El |
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88 | .Sh SEE ALSO |
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89 | .Xr dwarf 3 , |
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90 | .Xr dwarf_attr 3 , |
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91 | .Xr dwarf_formblock 3 , |
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92 | .Xr dwarf_formref 3 , |
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93 | .Xr dwarf_formsdata 3 , |
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94 | .Xr dwarf_formsig8 3 , |
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95 | .Xr dwarf_formstring 3 , |
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96 | .Xr dwarf_formudata 3 , |
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97 | .Xr dwarf_hasattr 3 |
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