In C, sinh() returns the hyperbolic sine of x. It is not an angle. sinh(0) is 0, and a negative input gives a negative result.
You pass one double. The result is a double with the same sign as x. Include <math.h>.
Pass any real number. Start with this call.
sinh(0.0);| Call | What it does |
|---|---|
sinh(0.0) | Returns 0. |
Include <math.h>. On GCC, link with -lm. x is not an angle in degrees.
double sinh(double x);
float sinhf(float x);
long double sinhl(long double x);| Parameter | Description |
|---|---|
| x | Required. Any real double. It is not an angle. |
| Return Value | Description |
|---|---|
| Hyperbolic sine | A double with the same sign as x. Zero stays zero. |
sinh is odd: negatives flip the sign of the result.
#include <math.h>
#include <stdio.h>
int main(void) {
printf("sinh(0) = %.5f\n", sinh(0.0));
printf("sinh(1) = %.5f\n", sinh(1.0));
printf("sinh(-1) = %.5f\n", sinh(-1.0));
return 0;
}sinh; link with -lm on GCC.sinh(0) is exactly 0.sinh(1) ≈ 1.17520.sinh(-1) is the negation of sinh(1).exp FormulaCompare the library call with (exp(x) - exp(-x)) / 2 using exp.
#include <math.h>
#include <stdio.h>
int main(void) {
double x = 1.5;
double lib = sinh(x);
double hand = (exp(x) - exp(-x)) / 2.0;
printf("sinh(%.1f) = %.8f\n", x, lib);
printf("exp form = %.8f\n", hand);
return 0;
}sinh(1.5) uses a carefully coded implementation.exp calls.|x|.sinh vs sinSame numeric argument, different functions—do not mix them up.
#include <math.h>
#include <stdio.h>
int main(void) {
double x = 1.0;
printf("sinh(%.1f) = %.5f\n", x, sinh(x));
printf("sin(%.1f) = %.5f\n", x, sin(x));
return 0;
}sin, that means 1 radian; for sinh, a hyperbolic argument.1.175 vs ≈ 0.841.sin stays in [-1, 1]; sinh does not.sin; hyperbolic identities → sinh.Compute the square root of a non-negative double.
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