asin, asinf, asinl
Calculates the arcsine.
double asin(
double x
);
float asin(
float x
); // C++ only
long double asin(
long double x
); // C++ only
float asinf (
float x
);
long double asinl(
long double x
);
Parameters
- x
Value whose arcsine is to be calculated.
Return Value
The asin function returns the arcsine (the inverse sine function) of x in the range –π/2 to π/2 radians.
By default, if x is less than –1 or greater than 1, asin returns an indefinite.
Input |
SEH Exception |
Matherr Exception |
|---|---|---|
± ∞ |
INVALID |
_DOMAIN |
± QNAN,IND |
none |
_DOMAIN |
|x|>1 |
INVALID |
_DOMAIN |
Remarks
Because C++ allows overloading, you can call overloads of asin with float and long double values. In a C program, asin always takes and returns a double.
Requirements
Routine |
Required header |
|---|---|
asin, asinf, asinl |
<math.h> |
Example
For more information, see acos, acosf, acosl.
.NET Framework Equivalent
See Also
Reference
atan, atanf, atanl, atan2, atan2f, atan2l
cos, cosf, cosl, cosh, coshf, coshl