3.81. __nv_erfcx

Prototype:

double @__nv_erfcx(double %x) 

Description:

Calculate the scaled complementary error function of the input argument x, e x 2 erfc ( x ) .

Returns:

  • __nv_erfcx( - ) returns +

  • __nv_erfcx( + ) returns +0

  • __nv_erfcx(x) returns + if the correctly calculated value is outside the double floating point range.

Note:

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

Library Availability:

Compute 2.0: Yes

Compute 3.0: Yes

Compute 3.5: Yes