Decompose the floating-point value x into a component m for the normalized fraction element and another term n for the exponent. The absolute value of m will be greater than or equal to 0.5 and less than 1.0 or it will be equal to 0; . The integer exponent n will be stored in the location to which nptr points.
Returns:
Returns the fractional component m.
frexp(0, nptr) returns 0 for the fractional component and zero for the integer component.
frexp(, nptr) returns and stores zero in the location pointed to by nptr.
frexp(, nptr) returns and stores an unspecified value in the location to which nptr points.
frexp(NaN, y) returns a NaN and stores an unspecified value in the location to which nptr points.
Note:
For accuracy information for this function see the CUDA C Programming Guide, Appendix C, Table C-2.