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sinh.c
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sinh.c
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/*++
toro C Library
https://github.com/KilianKegel/toro-C-Library#toro-c-library-formerly-known-as-torito-c-library
Copyright (c) 2017-2024, Kilian Kegel. All rights reserved.
SPDX-License-Identifier: GNU General Public License v3.0
Module Name:
sinh.c
Abstract:
Implementation of the Standard C function.
Calculates the hyperbolic tangent of a floating-point value.
Author:
Kilian Kegel
--*/
#include <math.h>
/**
Synopsis
#include <math.h>
double sinh(double);
Description
https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/sinh-sinhf-sinhl
https://en.wikipedia.org/wiki/Hyperbolic_functions
Parameters
https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/sinh-sinhf-sinhl#parameters
Returns
https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/sinh-sinhf-sinhl#return-value
sinh(x) = 0.5 * (e^x - e^(-x))
**/
double sinh(double d)
{
double epowx = exp(d);
double epowminusx = exp(-d);
double diff = epowx - epowminusx;
return 0.5 * diff;
}