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c++ Programming Glossary: x^

Interchanging values of two variables by xor operator using references or pointers

http://stackoverflow.com/questions/10971895/interchanging-values-of-two-variables-by-xor-operator-using-references-or-pointe

by reference and by pointers as well void swap int x int y x^ y^ x^ y cout x y endl int main int i 1 j 2 swap i j cout i j.. and by pointers as well void swap int x int y x^ y^ x^ y cout x y endl int main int i 1 j 2 swap i j cout i j endl.. to pass pointers to the objects or to use references. This x^ y^ x^ y has undefined behavior since it modifies the same object..

How to speed up series generation?

http://stackoverflow.com/questions/11381277/how-to-speed-up-series-generation

by squaring algorithm 1 if n 0 1 x ^n if n 0 x^n x.x^ n 1 2 ^2 if n is odd x^ n 2 ^2 if n is even The following.. by squaring algorithm 1 if n 0 1 x ^n if n 0 x^n x.x^ n 1 2 ^2 if n is odd x^ n 2 ^2 if n is even The following algorithm.. 1 if n 0 1 x ^n if n 0 x^n x.x^ n 1 2 ^2 if n is odd x^ n 2 ^2 if n is even The following algorithm calculate a^p m..

How do you reverse a string in place in C or C++?

http://stackoverflow.com/questions/198199/how-do-you-reverse-a-string-in-place-in-c-or-c

#include bits types.h #include stdio.h #define SWP x y x^ y y^ x x^ y void strrev char p char q p while q q q find eos.. bits types.h #include stdio.h #define SWP x y x^ y y^ x x^ y void strrev char p char q p while q q q find eos for q p q..

How can I write a power function myself?

http://stackoverflow.com/questions/2882706/how-can-i-write-a-power-function-myself

you know a fractional power is equivalent to a root e.g. x^ 1 2 sqrt x and you also know that multiplying powers with the..

Optimizations for pow() with const non-integer exponent?

http://stackoverflow.com/questions/6475373/optimizations-for-pow-with-const-non-integer-exponent

achieved by multiplying by a constant factor beforehand. x^p exp2 p log2 x exp2 p log2 x 127 127 127 127 cvtps2dq p log2.. with an underestimate and take the average. Compute x^0.8 four instructions error ~ 3 . Compute x^ 0.4 one rsqrtps.. Compute x^0.8 four instructions error ~ 3 . Compute x^ 0.4 one rsqrtps . This is quite accurate enough but does sacrifice..

Calculating e^x without using any functions

http://stackoverflow.com/questions/827706/calculating-ex-without-using-any-functions

. c math exponential share improve this question Both x^n and n quickly grow large with n exponentially and superexponentially.. soon overflow any data type you use. On the other hand x^n n goes down eventually and you can stop when it's small. That.. you can stop when it's small. That is use the fact that x^ n 1 n 1 x^n n x n 1 . Like this say term 1.0 for n 1 term 1.0E..