fresnel.h

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   | Copyright (c) 2005-2017, Individual contributors, see AUTHORS file     |
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#pragma once

#include <cstdlib>
#include <mrpt/utils/mrpt_macros.h>
#include <mrpt/config.h>

namespace mrpt
{
namespace math
{
/** @addtogroup  fresnel_integrals_grp Fresnel integrals (`#include
 * <mrpt/math/fresnel.h>`)
  *  \ingroup mrpt_base_grp
  * @{ */

/** Evaluates the integral from 0 to x of sqrt(2/pi) sin(t^2) dt. Equivalent to
 * MATLAB fresnels()
  * \sa https://en.wikipedia.org/wiki/Fresnel_integral
  * \note Code based on
 * http://www.mymathlib.com/functions/fresnel_sin_cos_integrals.html */
double fresnel_sin_integral(double x) noexcept;

/** Evaluates the integral from 0 to x of sqrt(2/pi) cos(t^2) dt. Equivalent to
  *MATLAB fresnelc()
  * \sa https://en.wikipedia.org/wiki/Fresnel_integral
  *\note Code based on
  *http://www.mymathlib.com/functions/fresnel_sin_cos_integrals.html */
double fresnel_cos_integral(double x) noexcept;

#ifdef HAVE_LONG_DOUBLE
/** long double version of fresnel_sin_integral */
long double lfresnel_sin_integral(long double x) noexcept;

/** long double version of fresnel_cos_integral */
long double lfresnel_cos_integral(long double x) noexcept;
#endif

/** @} */

}  // End of MATH namespace

}  // End of namespace