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c++ Programming Glossary: multiplicationshttp://stackoverflow.com/questions/10076011/overflow-aa-mod-n contains the 32 lsbs. Squaring is then a set of four cross multiplications each result is guaranteed to fit into a 64 bit type. You then..
http://stackoverflow.com/questions/12430339/c-large-number-arithmetic is shifting For your question it would need 500 x 500 multiplications and 500 x 500 additions. O N N Pro each digit multiplication..
Why is the order of evaluation for function parameters unspecified in c++? http://stackoverflow.com/questions/12540418/why-is-the-order-of-evaluation-for-function-parameters-unspecified-in-c a multiplication in 3 cycles. Can execute additions and multiplications at the same time. Now suppose you have a function call as follows..
http://stackoverflow.com/questions/1354899/how-can-i-see-the-assembly-code-that-is-generated-by-a-gcc-any-flavor-compiler for a C C program I am trying to optimize a lot of multiplications and pointer arithmetics and would like to see what the compiler..
Does const mean thread-safe in C++11? http://stackoverflow.com/questions/14127379/does-const-mean-thread-safe-in-c11 integer which is inherently non thread safe and for which multiplications are extremely costly. The member function area is no longer..
Fast bignum square computation http://stackoverflow.com/questions/18465326/fast-bignum-square-computation twice not the first and last one which means that N N multiplications can be replaced by N 1 N 2 multiplications. P.S. 32bit 32bit.. means that N N multiplications can be replaced by N 1 N 2 multiplications. P.S. 32bit 32bit 64bit so the result of every mul add operation.. faster with the ratio given by the complexities of booth multiplications. The treshold for multiplication is around 32 98bits and for..
Using bools in calculations to avoid branches http://stackoverflow.com/questions/20163883/using-bools-in-calculations-to-avoid-branches Random is when branch is unpredictable. In this case multiplications is more than 2 times faster. In all cases my bit hacking trick..
How can I perform multiplication without the '*' operator? http://stackoverflow.com/questions/2069488/how-can-i-perform-multiplication-without-the-operator over to the left. If you're unsure of this do a few binary multiplications on paper. When you're done convert the result back to decimal..
How can I compare the performance of log() and fp division in C++? http://stackoverflow.com/questions/2858483/how-can-i-compare-the-performance-of-log-and-fp-division-in-c the scope of double . As I ™m performing a large number of multiplications this has the added benefit of converting the multiplications.. this has the added benefit of converting the multiplications to sums. However at a certain point in my algorithm I need to..
Floating point division vs floating point multiplication http://stackoverflow.com/questions/4125033/floating-point-division-vs-floating-point-multiplication floating point divisions were slower than floating point multiplications without elaborating the why. Does this statement hold for modern..
http://stackoverflow.com/questions/5231096/time-complexity-of-power
Efficient way to compute p^q (exponentiation), where q is an integer http://stackoverflow.com/questions/5625431/efficient-way-to-compute-pq-exponentiation-where-q-is-an-integer question Exponentiation by squaring uses only O lg q multiplications. template typename T T expt T p unsigned q T r 1 while q 0 if..
Fast multiplication/division by 2 for floats and doubles (C/C++) http://stackoverflow.com/questions/7720668/fast-multiplication-division-by-2-for-floats-and-doubles-c-c is there a way to play with the exponent to get fast multiplications divisions by a power of 2 I can even assume that the number..
how to achieve 4 FLOPs per cycle http://stackoverflow.com/questions/8389648/how-to-achieve-4-flops-per-cycle gcc was to manually loop unroll and arrange additions and multiplications in groups of three. With g O2 march nocona addmul_unroll.cpp..
Efficient Exponentiation For HUGE Numbers (I'm Talking Googols) http://stackoverflow.com/questions/8771713/efficient-exponentiation-for-huge-numbers-im-talking-googols I can solve exponentiation in a logarithmic number of multiplications. But to me I can't get around how to apply this method to my..
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