Talk:Exponentiation operator: Difference between revisions
Content added Content deleted
(Need a straighter answer) |
|||
| Line 11: | Line 11: | ||
[[User:NevilleDNZ|NevilleDNZ]] 06:11, 19 February 2008 (MST) |
[[User:NevilleDNZ|NevilleDNZ]] 06:11, 19 February 2008 (MST) |
||
:OK, but for this task, all that is required is int<sup>int</sup> and real<sup>int</sup> right? --[[User:Mwn3d|Mwn3d]] 06:19, 19 February 2008 (MST) |
|||
Revision as of 13:19, 19 February 2008
Fractional Exponents
This is for integer powers only right? No fractional exponents? --Mwn3d 05:58, 19 February 2008 (MST)
I believe that the REAL * REAL fraction can probably be done faster using some numerical equation. Eg simply
OP ** = ( REAL base, exponent )REAL: exp(log(base)*exponent); ~ # ... #
This above would work for fractional powers. For integral exponents the routine I provided is "sometimes" faster then alternatives, esp where the exponent is s power of two.
BTW: I wrote these routine as a hint to User:Short Circuit, and as a replacement to the mpz_class pow2(mpz_class exp)
routine he contributed in Lucas-Lehmer_test#C++ (Which is probably painfully slow).
NevilleDNZ 06:11, 19 February 2008 (MST)
- OK, but for this task, all that is required is intint and realint right? --Mwn3d 06:19, 19 February 2008 (MST)