3.21. __nv_ceil Prototype: double @__nv_ceil(double %x) Description: Compute the smallest integer value not less than x. Returns: Returns ⌈ x ⌉ expressed as a floating-point number. __nv_ceil( ± 0 ) returns ± 0 . __nv_ceil( ± ∞ ) returns ± ∞ . Library Availability: Compute 2.0: Yes Compute 3.0: Yes Compute 3.5: Yes