libdevice User's Guide :: CUDA Toolkit Documentation

3.103. __nv_fast_fdividef

Prototype:

float @__nv_fast_fdividef(float %x, float %y)

Description:

Calculate the fast approximate division of x by y.

Returns:

Returns x / y.

__nv_fast_fdividef( $\infty$ , y) returns NaN for $2^{126} < y < 2^{128}$ .
__nv_fast_fdividef(x, y) returns 0 for $2^{126} < y < 2^{128}$ and $x \neq \infty$ .

Note:

For accuracy information see the CUDA C++ Programming Guide, Mathematical Functions Appendix, Intrinsic Functions section.

Library Availability:

Compute 2.0: Yes

Compute 3.0: Yes

Compute 3.5: Yes