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libdevice User's Guide (PDF) - CUDA Toolkit v5.5 for POWER8 (older) - Last updated January 10, 2015 - Send Feedback

3.232. __nv_modff

Prototype:

float @__nv_modff(float %x, float* %b) 

Description:

Break down the argument x into fractional and integral parts. The integral part is stored in the argument iptr. Fractional and integral parts are given the same sign as the argument x.

Returns:

  • __nv_modff( ± x , iptr) returns a result with the same sign as x.

  • __nv_modff( ± , iptr) returns ± 0 and stores ± in the object pointed to by iptr.

  • __nv_modff(NaN, iptr) stores a NaN in the object pointed to by iptr and returns a NaN.

Note:

For accuracy information for this function see the CUDA C Programming Guide, Appendix C, Table C-2.

Library Availability:

Compute 2.0: Yes

Compute 3.0: Yes

Compute 3.5: Yes


libdevice User's Guide (PDF) - CUDA Toolkit v5.5 for POWER8 (older) - Last updated January 10, 2015 - Send Feedback