TANH Section: Linux Programmer's Manual (3) Updated: June 13, 2025 Index   NAME tanh - hyperbolic tangent function   SYNOPSIS #include <math.h> double tanh(double x);   DESCRIPTION The tanh() function returns the hyperbolic tangent of x, which is defined mathematically as sinh(x) / cosh(x).   CONFORMING TO SVID 3, POSIX, BSD 4.3, ISO 9899   SEE ALSO   Index NAME SYNOPSIS DESCRIPTION CONFORMING TO SEE ALSO This document was created by using the manual pages. Time: 11:58:06 GMT, March 24, 2025