3.226. __nv_logbf

Prototype: 

float @__nv_logbf(float %x)

Description:

Calculate the floating point representation of the exponent of the input argument x.

Returns:

  • __nv_logbf ± 0 returns − ∞

  • __nv_logbf ± ∞ returns + ∞

Note:

For accuracy information see the CUDA C++ Programming Guide, Mathematical Functions Appendix, Single-Precision Floating-Point Functions section.

Library Availability:

Compute 2.0: Yes

Compute 3.0: Yes

Compute 3.5: Yes