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<h3 class="section">19.6 The Laplace Distribution</h3>
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— Function: double <b>gsl_ran_laplace</b> (<var>const gsl_rng * r, double a</var>)<var><a name="index-gsl_005fran_005flaplace-1505"></a></var><br>
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<blockquote><p><a name="index-two_002dsided-exponential-distribution-1506"></a><a name="index-Laplace-distribution-1507"></a>This function returns a random variate from the Laplace distribution
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with width <var>a</var>. The distribution is,
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for -\infty < x < \infty.
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</p></blockquote></div>
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— Function: double <b>gsl_ran_laplace_pdf</b> (<var>double x, double a</var>)<var><a name="index-gsl_005fran_005flaplace_005fpdf-1508"></a></var><br>
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<blockquote><p>This function computes the probability density p(x) at <var>x</var>
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for a Laplace distribution with width <var>a</var>, using the formula
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</p></blockquote></div>
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— Function: double <b>gsl_cdf_laplace_P</b> (<var>double x, double a</var>)<var><a name="index-gsl_005fcdf_005flaplace_005fP-1509"></a></var><br>
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— Function: double <b>gsl_cdf_laplace_Q</b> (<var>double x, double a</var>)<var><a name="index-gsl_005fcdf_005flaplace_005fQ-1510"></a></var><br>
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— Function: double <b>gsl_cdf_laplace_Pinv</b> (<var>double P, double a</var>)<var><a name="index-gsl_005fcdf_005flaplace_005fPinv-1511"></a></var><br>
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— Function: double <b>gsl_cdf_laplace_Qinv</b> (<var>double Q, double a</var>)<var><a name="index-gsl_005fcdf_005flaplace_005fQinv-1512"></a></var><br>
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<blockquote><p>These functions compute the cumulative distribution functions
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P(x), Q(x) and their inverses for the Laplace
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distribution with width <var>a</var>.
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</p></blockquote></div>
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