# V7M/src/libm/sinh.c

Compare this file to the similar file:
Show the results in this format:

```/*
sinh(arg) returns the hyperbolic sine of its floating-
point argument.

The exponential function is called for arguments
greater in magnitude than 0.5.

A series is used for arguments smaller in magnitude than 0.5.
The coefficients are #2029 from Hart & Cheney. (20.36D)

cosh(arg) is computed from the exponential function for
all arguments.
*/

double	exp();

static double p0  = -0.6307673640497716991184787251e+6;
static double p1  = -0.8991272022039509355398013511e+5;
static double p2  = -0.2894211355989563807284660366e+4;
static double p3  = -0.2630563213397497062819489e+2;
static double q0  = -0.6307673640497716991212077277e+6;
static double q1   = 0.1521517378790019070696485176e+5;
static double q2  = -0.173678953558233699533450911e+3;

double
sinh(arg)
double arg;
{
double temp, argsq;
register sign;

sign = 1;
if(arg < 0) {
arg = - arg;
sign = -1;
}

if(arg > 21.) {
temp = exp(arg)/2;
if (sign>0)
return(temp);
else
return(-temp);
}

if(arg > 0.5) {
return(sign*(exp(arg) - exp(-arg))/2);
}

argsq = arg*arg;
temp = (((p3*argsq+p2)*argsq+p1)*argsq+p0)*arg;
temp /= (((argsq+q2)*argsq+q1)*argsq+q0);
return(sign*temp);
}

double
cosh(arg)
double arg;
{
if(arg < 0)
arg = - arg;
if(arg > 21.) {
return(exp(arg)/2);
}

return((exp(arg) + exp(-arg))/2);
}
```