libdevice User's Guide :: CUDA Toolkit Documentation

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3.199. __nv_ldexp

Prototype:

double @__nv_ldexp(double %x, i32 %y)

Description:

Calculate the value of $x \cdot 2^{e x p}$ of the input arguments x and exp.

Returns:

__nv_ldexp(x) returns $\pm \infty$ if the correctly calculated value is outside the double floating point range.

Note:

For accuracy information for this function see the CUDA C Programming Guide, Appendix D.1, Table 7.

Library Availability:

Compute 2.0: Yes

Compute 3.0: Yes

Compute 3.5: Yes