C++ 编程/代码/标准 C 库/函数/tanh

tanh

语法	#include <cmath> double tanh( double arg );

/*example*/
#include <stdio.h>
#include <math.h>
int main (){
	double c, p;
	c = log(2.0);
	p = tanh (c);
	printf ("The hyperbolic tangent of %lf is %lf.\n", c, p );
return 0;
}

函数 tanh() 返回arg的双曲正切值。

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