exp, expf
Calculates the exponential.
double exp( double x ); float exp( float x ); // C++ only long double exp( long double x ); // C++ only float expf( float x );
The exp function returns the exponential value of the floating-point parameter, x, if successful. That is, the result is e to the power x, where e is the base of the natural logarithm. On overflow, the function returns INF (infinite) and on underflow, exp returns 0.
|
Input |
SEH Exception |
Matherr Exception |
|---|---|---|
|
± QNAN,IND |
None |
_DOMAIN |
|
± ∞ |
INVALID |
_DOMAIN |
|
x ≥ 7.097827e+002 |
INEXACT+OVERFLOW |
OVERFLOW |
|
X ≤ -7.083964e+002 |
INEXACT+UNDERFLOW |
UNDERFLOW |
exp has an implementation that uses Streaming SIMD Extensions 2 (SSE2). See _set_SSE2_enable for information and restrictions on using the SSE2 implementation.
|
Function |
Required header |
|---|---|
|
exp , expf |
<math.h> |
For additional compatibility information, see Compatibility in the Introduction.
