fastexpf: fast single precision exponential function
— : float fastexpf (float x)
Weak alias: expf
C Prototype:
float fastexpf (float x);
Inputs:
float x - the single precision input value.
Outputs:
e raised to the power x (exponential of x).
Fortran Function Interface:
REAL FASTEXPF(X)
Inputs:
REAL X - the single precision input value.
Return Value:
e raised to the power X (exponential of X).
Notes:
fastexpf computes the single precision exponential function of the input argument x.
This is a relaxed
version of expf, suitable for use with fastmath compiler flags or applications
not requiring full error handling. Denormal inputs may produce unpredictable
results. Error inputs produce C99 return values. The routine is accurate to
better than 1 ulp over the valid input range.