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  69. <div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * DISTRHO Plugin Framework (DPF)</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> * Copyright (C) 2012-2018 Filipe Coelho &lt;falktx@falktx.com&gt;</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> * Permission to use, copy, modify, and/or distribute this software for any purpose with</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> * or without fee is hereby granted, provided that the above copyright notice and this</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;<span class="comment"> * permission notice appear in all copies.</span></div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="comment"> * THE SOFTWARE IS PROVIDED &quot;AS IS&quot; AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;<span class="comment"> * TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN</span></div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="comment"> * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="comment"> * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;<span class="comment"> * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN</span></div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="comment"> * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.</span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;</div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;<span class="preprocessor">#ifndef DISTRHO_UTILS_HPP_INCLUDED</span></div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#define DISTRHO_UTILS_HPP_INCLUDED</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;</div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#include &quot;src/DistrhoDefines.h&quot;</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;</div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#include &lt;cstdarg&gt;</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#include &lt;cstdio&gt;</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;<span class="preprocessor">#include &lt;cstdlib&gt;</span></div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#include &lt;cstring&gt;</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;</div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;<span class="preprocessor">#include &lt;cmath&gt;</span></div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;</div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#ifdef DISTRHO_PROPER_CPP11_SUPPORT</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor"># include &lt;cstdint&gt;</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor"># include &lt;stdint.h&gt;</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;</div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;<span class="preprocessor">#if defined(DISTRHO_OS_MAC) &amp;&amp; ! defined(CARLA_OS_MAC) &amp;&amp; ! defined(DISTRHO_PROPER_CPP11_SUPPORT)</span></div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="keyword">namespace </span>std {</div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">float</span> fmin(<span class="keywordtype">float</span> __x, <span class="keywordtype">float</span> __y)</div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;  { <span class="keywordflow">return</span> __builtin_fminf(__x, __y); }</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">float</span> fmax(<span class="keywordtype">float</span> __x, <span class="keywordtype">float</span> __y)</div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;  { <span class="keywordflow">return</span> __builtin_fmaxf(__x, __y); }</div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">float</span> rint(<span class="keywordtype">float</span> __x)</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;  { <span class="keywordflow">return</span> __builtin_rintf(__x); }</div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="keyword">inline</span> <span class="keywordtype">float</span> round(<span class="keywordtype">float</span> __x)</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;  { <span class="keywordflow">return</span> __builtin_roundf(__x); }</div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;}</div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="preprocessor">#ifndef M_PI</span></div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;<span class="preprocessor"># define M_PI 3.14159265358979323846</span></div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;<span class="comment">// -----------------------------------------------------------------------</span></div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;<span class="comment">// misc functions</span></div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;<span class="comment"> * Return a 64-bit number from 4 8-bit numbers.</span></div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;int64_t d_cconst(<span class="keyword">const</span> uint8_t a, <span class="keyword">const</span> uint8_t b, <span class="keyword">const</span> uint8_t c, <span class="keyword">const</span> uint8_t d) noexcept</div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;{</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordflow">return</span> (a &lt;&lt; 24) | (b &lt;&lt; 16) | (c &lt;&lt; 8) | (d &lt;&lt; 0);</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;}</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;</div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;<span class="comment"> * Return an hexadecimal representation of a MAJ.MIN.MICRO version number.</span></div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;uint32_t d_version(<span class="keyword">const</span> uint8_t major, <span class="keyword">const</span> uint8_t minor, <span class="keyword">const</span> uint8_t micro) noexcept</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;{</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;    <span class="keywordflow">return</span> uint32_t(major &lt;&lt; 16) | uint32_t(minor &lt;&lt; 8) | (micro &lt;&lt; 0);</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;}</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;<span class="comment"> * Dummy function.</span></div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="keywordtype">void</span> d_pass() noexcept {}</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;<span class="comment">// -----------------------------------------------------------------------</span></div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;<span class="comment">// string print functions</span></div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;<span class="comment"> * Print a string to stdout with newline (gray color).</span></div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;<span class="comment"> * Does nothing if DEBUG is not defined.</span></div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;<span class="preprocessor">#ifndef DEBUG</span></div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;<span class="preprocessor"># define d_debug(...)</span></div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;<span class="preprocessor">#else</span></div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;<span class="keywordtype">void</span> d_debug(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> fmt, ...) noexcept</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;{</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;    <span class="keywordflow">try</span> {</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;        ::va_list args;</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;        ::va_start(args, fmt);</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        std::fprintf(stdout, <span class="stringliteral">&quot;\x1b[30;1m&quot;</span>);</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        std::vfprintf(stdout, fmt, args);</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        std::fprintf(stdout, <span class="stringliteral">&quot;\x1b[0m\n&quot;</span>);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        ::va_end(args);</div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;    } <span class="keywordflow">catch</span> (...) {}</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;}</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;<span class="comment"> * Print a string to stdout with newline.</span></div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;<span class="keywordtype">void</span> d_stdout(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> fmt, ...) noexcept</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;{</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;    <span class="keywordflow">try</span> {</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;        ::va_list args;</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;        ::va_start(args, fmt);</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;        std::vfprintf(stdout, fmt, args);</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;        std::fprintf(stdout, <span class="stringliteral">&quot;\n&quot;</span>);</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        ::va_end(args);</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;    } <span class="keywordflow">catch</span> (...) {}</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;}</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;<span class="comment"> * Print a string to stderr with newline.</span></div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;<span class="keywordtype">void</span> d_stderr(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> fmt, ...) noexcept</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;{</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;    <span class="keywordflow">try</span> {</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;        ::va_list args;</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;        ::va_start(args, fmt);</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;        std::vfprintf(stderr, fmt, args);</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;        std::fprintf(stderr, <span class="stringliteral">&quot;\n&quot;</span>);</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;        ::va_end(args);</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    } <span class="keywordflow">catch</span> (...) {}</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;}</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;<span class="comment"> * Print a string to stderr with newline (red color).</span></div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;<span class="keywordtype">void</span> d_stderr2(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> fmt, ...) noexcept</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;{</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;    <span class="keywordflow">try</span> {</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;        ::va_list args;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        ::va_start(args, fmt);</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;        std::fprintf(stderr, <span class="stringliteral">&quot;\x1b[31m&quot;</span>);</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;        std::vfprintf(stderr, fmt, args);</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;        std::fprintf(stderr, <span class="stringliteral">&quot;\x1b[0m\n&quot;</span>);</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;        ::va_end(args);</div><div class="line"><a name="l00147"></a><span class="lineno">  147</span>&#160;    } <span class="keywordflow">catch</span> (...) {}</div><div class="line"><a name="l00148"></a><span class="lineno">  148</span>&#160;}</div><div class="line"><a name="l00149"></a><span class="lineno">  149</span>&#160;</div><div class="line"><a name="l00150"></a><span class="lineno">  150</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00151"></a><span class="lineno">  151</span>&#160;<span class="comment"> * Print a safe assertion error message.</span></div><div class="line"><a name="l00152"></a><span class="lineno">  152</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00153"></a><span class="lineno">  153</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00154"></a><span class="lineno">  154</span>&#160;<span class="keywordtype">void</span> d_safe_assert(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> assertion, <span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> file, <span class="keyword">const</span> <span class="keywordtype">int</span> line) noexcept</div><div class="line"><a name="l00155"></a><span class="lineno">  155</span>&#160;{</div><div class="line"><a name="l00156"></a><span class="lineno">  156</span>&#160;    d_stderr2(<span class="stringliteral">&quot;assertion failure: \&quot;%s\&quot; in file %s, line %i&quot;</span>, assertion, file, line);</div><div class="line"><a name="l00157"></a><span class="lineno">  157</span>&#160;}</div><div class="line"><a name="l00158"></a><span class="lineno">  158</span>&#160;</div><div class="line"><a name="l00159"></a><span class="lineno">  159</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;<span class="comment"> * Print a safe exception error message.</span></div><div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00162"></a><span class="lineno">  162</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;<span class="keywordtype">void</span> d_safe_exception(<span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> exception, <span class="keyword">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> file, <span class="keyword">const</span> <span class="keywordtype">int</span> line) noexcept</div><div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;{</div><div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;    d_stderr2(<span class="stringliteral">&quot;exception caught: \&quot;%s\&quot; in file %s, line %i&quot;</span>, exception, file, line);</div><div class="line"><a name="l00166"></a><span class="lineno">  166</span>&#160;}</div><div class="line"><a name="l00167"></a><span class="lineno">  167</span>&#160;</div><div class="line"><a name="l00168"></a><span class="lineno">  168</span>&#160;<span class="comment">// -----------------------------------------------------------------------</span></div><div class="line"><a name="l00169"></a><span class="lineno">  169</span>&#160;<span class="comment">// math functions</span></div><div class="line"><a name="l00170"></a><span class="lineno">  170</span>&#160;</div><div class="line"><a name="l00171"></a><span class="lineno">  171</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00172"></a><span class="lineno">  172</span>&#160;<span class="comment"> * Safely compare two floating point numbers.</span></div><div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;<span class="comment"> * Returns true if they match.</span></div><div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00176"></a><span class="lineno">  176</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00177"></a><span class="lineno">  177</span>&#160;<span class="keywordtype">bool</span> d_isEqual(<span class="keyword">const</span> T&amp; v1, <span class="keyword">const</span> T&amp; v2)</div><div class="line"><a name="l00178"></a><span class="lineno">  178</span>&#160;{</div><div class="line"><a name="l00179"></a><span class="lineno">  179</span>&#160;    <span class="keywordflow">return</span> std::abs(v1-v2) &lt; std::numeric_limits&lt;T&gt;::epsilon();</div><div class="line"><a name="l00180"></a><span class="lineno">  180</span>&#160;}</div><div class="line"><a name="l00181"></a><span class="lineno">  181</span>&#160;</div><div class="line"><a name="l00182"></a><span class="lineno">  182</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00183"></a><span class="lineno">  183</span>&#160;<span class="comment"> * Safely compare two floating point numbers.</span></div><div class="line"><a name="l00184"></a><span class="lineno">  184</span>&#160;<span class="comment"> * Returns true if they don&#39;t match.</span></div><div class="line"><a name="l00185"></a><span class="lineno">  185</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00186"></a><span class="lineno">  186</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00187"></a><span class="lineno">  187</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00188"></a><span class="lineno">  188</span>&#160;<span class="keywordtype">bool</span> d_isNotEqual(<span class="keyword">const</span> T&amp; v1, <span class="keyword">const</span> T&amp; v2)</div><div class="line"><a name="l00189"></a><span class="lineno">  189</span>&#160;{</div><div class="line"><a name="l00190"></a><span class="lineno">  190</span>&#160;    <span class="keywordflow">return</span> std::abs(v1-v2) &gt;= std::numeric_limits&lt;T&gt;::epsilon();</div><div class="line"><a name="l00191"></a><span class="lineno">  191</span>&#160;}</div><div class="line"><a name="l00192"></a><span class="lineno">  192</span>&#160;</div><div class="line"><a name="l00193"></a><span class="lineno">  193</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00194"></a><span class="lineno">  194</span>&#160;<span class="comment"> * Safely check if a floating point number is zero.</span></div><div class="line"><a name="l00195"></a><span class="lineno">  195</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00196"></a><span class="lineno">  196</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00197"></a><span class="lineno">  197</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00198"></a><span class="lineno">  198</span>&#160;<span class="keywordtype">bool</span> d_isZero(<span class="keyword">const</span> T&amp; value)</div><div class="line"><a name="l00199"></a><span class="lineno">  199</span>&#160;{</div><div class="line"><a name="l00200"></a><span class="lineno">  200</span>&#160;    <span class="keywordflow">return</span> std::abs(value) &lt; std::numeric_limits&lt;T&gt;::epsilon();</div><div class="line"><a name="l00201"></a><span class="lineno">  201</span>&#160;}</div><div class="line"><a name="l00202"></a><span class="lineno">  202</span>&#160;</div><div class="line"><a name="l00203"></a><span class="lineno">  203</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00204"></a><span class="lineno">  204</span>&#160;<span class="comment"> * Safely check if a floating point number is not zero.</span></div><div class="line"><a name="l00205"></a><span class="lineno">  205</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00206"></a><span class="lineno">  206</span>&#160;<span class="keyword">template</span>&lt;<span class="keyword">typename</span> T&gt;</div><div class="line"><a name="l00207"></a><span class="lineno">  207</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00208"></a><span class="lineno">  208</span>&#160;<span class="keywordtype">bool</span> d_isNotZero(<span class="keyword">const</span> T&amp; value)</div><div class="line"><a name="l00209"></a><span class="lineno">  209</span>&#160;{</div><div class="line"><a name="l00210"></a><span class="lineno">  210</span>&#160;    <span class="keywordflow">return</span> std::abs(value) &gt;= std::numeric_limits&lt;T&gt;::epsilon();</div><div class="line"><a name="l00211"></a><span class="lineno">  211</span>&#160;}</div><div class="line"><a name="l00212"></a><span class="lineno">  212</span>&#160;</div><div class="line"><a name="l00213"></a><span class="lineno">  213</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00214"></a><span class="lineno">  214</span>&#160;<span class="comment"> * Get next power of 2.</span></div><div class="line"><a name="l00215"></a><span class="lineno">  215</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00216"></a><span class="lineno">  216</span>&#160;<span class="keyword">static</span> <span class="keyword">inline</span></div><div class="line"><a name="l00217"></a><span class="lineno">  217</span>&#160;uint32_t d_nextPowerOf2(uint32_t size) noexcept</div><div class="line"><a name="l00218"></a><span class="lineno">  218</span>&#160;{</div><div class="line"><a name="l00219"></a><span class="lineno">  219</span>&#160;    DISTRHO_SAFE_ASSERT_RETURN(size &gt; 0, 0);</div><div class="line"><a name="l00220"></a><span class="lineno">  220</span>&#160;</div><div class="line"><a name="l00221"></a><span class="lineno">  221</span>&#160;    <span class="comment">// http://graphics.stanford.edu/~seander/bithacks.html#RoundUpPowerOf2</span></div><div class="line"><a name="l00222"></a><span class="lineno">  222</span>&#160;    --size;</div><div class="line"><a name="l00223"></a><span class="lineno">  223</span>&#160;    size |= size &gt;&gt; 1;</div><div class="line"><a name="l00224"></a><span class="lineno">  224</span>&#160;    size |= size &gt;&gt; 2;</div><div class="line"><a name="l00225"></a><span class="lineno">  225</span>&#160;    size |= size &gt;&gt; 4;</div><div class="line"><a name="l00226"></a><span class="lineno">  226</span>&#160;    size |= size &gt;&gt; 8;</div><div class="line"><a name="l00227"></a><span class="lineno">  227</span>&#160;    size |= size &gt;&gt; 16;</div><div class="line"><a name="l00228"></a><span class="lineno">  228</span>&#160;    <span class="keywordflow">return</span> ++size;</div><div class="line"><a name="l00229"></a><span class="lineno">  229</span>&#160;}</div><div class="line"><a name="l00230"></a><span class="lineno">  230</span>&#160;</div><div class="line"><a name="l00231"></a><span class="lineno">  231</span>&#160;<span class="comment">// -----------------------------------------------------------------------</span></div><div class="line"><a name="l00232"></a><span class="lineno">  232</span>&#160;</div><div class="line"><a name="l00233"></a><span class="lineno">  233</span>&#160;<span class="preprocessor">#ifndef DONT_SET_USING_DISTRHO_NAMESPACE</span></div><div class="line"><a name="l00234"></a><span class="lineno">  234</span>&#160;  <span class="comment">// If your code uses a lot of DISTRHO classes, then this will obviously save you</span></div><div class="line"><a name="l00235"></a><span class="lineno">  235</span>&#160;  <span class="comment">// a lot of typing, but can be disabled by setting DONT_SET_USING_DISTRHO_NAMESPACE.</span></div><div class="line"><a name="l00236"></a><span class="lineno">  236</span>&#160;  <span class="keyword">namespace </span><a class="code" href="namespaceDISTRHO__NAMESPACE.html">DISTRHO_NAMESPACE</a> {}</div><div class="line"><a name="l00237"></a><span class="lineno">  237</span>&#160;  <span class="keyword">using namespace </span><a class="code" href="namespaceDISTRHO__NAMESPACE.html">DISTRHO_NAMESPACE</a>;</div><div class="line"><a name="l00238"></a><span class="lineno">  238</span>&#160;<span class="preprocessor">#endif</span></div><div class="line"><a name="l00239"></a><span class="lineno">  239</span>&#160;</div><div class="line"><a name="l00240"></a><span class="lineno">  240</span>&#160;<span class="comment">// -----------------------------------------------------------------------</span></div><div class="line"><a name="l00241"></a><span class="lineno">  241</span>&#160;</div><div class="line"><a name="l00242"></a><span class="lineno">  242</span>&#160;<span class="preprocessor">#endif // DISTRHO_UTILS_HPP_INCLUDED</span></div><div class="ttc" id="namespaceDISTRHO__NAMESPACE_html"><div class="ttname"><a href="namespaceDISTRHO__NAMESPACE.html">DISTRHO_NAMESPACE</a></div><div class="ttdef"><b>Definition:</b> DistrhoUtils.hpp:236</div></div>

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