¡@
c++ Programming Glossary: expInverse fourier transformation in OpenCV http://stackoverflow.com/questions/10269456/inverse-fourier-transformation-in-opencv q1 tmp.copyTo q2 dst dst Rect 0 0 dst.cols 2 dst.rows 2 exp dst dst dst Scalar all 1 Mat planes 2 polarToCart dst Mat zeros.. then backward FFT and everything works just fine as expected. Load an image cv Mat inputImage cv imread argv argc 1..
Floating point comparison revisited http://stackoverflow.com/questions/13940316/floating-point-comparison-revisited limits #include algorithm namespace Local version of frexp that handles infinities specially. template typename T T my_frexp.. handles infinities specially. template typename T T my_frexp const T num int exp typedef std numeric_limits T limits Treat.. specially. template typename T T my_frexp const T num int exp typedef std numeric_limits T limits Treat infinity as 2^max_exponent..
Fast bignum square computation http://stackoverflow.com/questions/18465326/fast-bignum-square-computation k h k for alu.cy k 0 k alu.inc c.dat k c.bits c.siz 5 c.exp x.exp x.exp c.siz x.siz x.siz 5 1 c.sig sig this c edit1 use.. k for alu.cy k 0 k alu.inc c.dat k c.bits c.siz 5 c.exp x.exp x.exp c.siz x.siz x.siz 5 1 c.sig sig this c edit1 use of Karatsuba.. alu.cy k 0 k alu.inc c.dat k c.bits c.siz 5 c.exp x.exp x.exp c.siz x.siz x.siz 5 1 c.sig sig this c edit1 use of Karatsuba..
http://stackoverflow.com/questions/19955968/why-is-math-pow0-0-1 1 but 0^N should always be 0 for N 0 so you should have no expectations mathematically as to the result of this either. This.. pow 0 0 are both 1 because there are applications that can exploit this definition. For example if x p and y p are any analytic.. that become zero at p a then pow x y which equals exp y log x approaches 1 as p approaches a. Update C As leemes correctly..
pure/const function attributes in different compilers http://stackoverflow.com/questions/2798188/pure-const-function-attributes-in-different-compilers x return sum float sigmoid float x return 1.0f 1.0f exp x In that example the compiler could optimise the function calculate..
How can I write a power function myself? http://stackoverflow.com/questions/2882706/how-can-i-write-a-power-function-myself in a loop when I wanted to do a power with a non integer exponent like 5 4.5 or negatives 2 21 and I went crazy So how can.. to note I cannot use functions which use powers e.g. exp which would make this ultimately useless. c math floating point.. powers with the same base is equivalent to add their exponents. With all the above you can Decompose the exponent in..
Probability density function problem, from a paper, implemented using C++, not working as intended http://stackoverflow.com/questions/4103477/probability-density-function-problem-from-a-paper-implemented-using-c-not-w 0 x 1 x x n 0 x n float p1 1 y n y float p2 1 x n float exp 1 2 y y p2 pow p2 exp n_copy p1 p2 printf .5f n n_copy And here.. p1 1 y n y float p2 1 x n float exp 1 2 y y p2 pow p2 exp n_copy p1 p2 printf .5f n n_copy And here are some results 5.. but I thought that I would elaborate more and try to explain away some of the confusion here. I could definitely fail...
Portability of binary serialization of double/float type in C++ http://stackoverflow.com/questions/4733147/portability-of-binary-serialization-of-double-float-type-in-c 11 uint64_t pack754 long double f unsigned bits unsigned expbits long double fnorm int shift long long sign exp significand.. expbits long double fnorm int shift long long sign exp significand unsigned significandbits bits expbits 1 1 for sign.. long sign exp significand unsigned significandbits bits expbits 1 1 for sign bit if f 0.0 return 0 get this special case..
how can I extract the mantissa of a double http://stackoverflow.com/questions/5672960/how-can-i-extract-the-mantissa-of-a-double double share improve this question In math.h double frexp double value int exp decompose VALUE in exponent and mantissa... this question In math.h double frexp double value int exp decompose VALUE in exponent and mantissa. double ldexp double.. double frexp double value int exp decompose VALUE in exponent and mantissa. double ldexp double value int exp does the..
http://stackoverflow.com/questions/7344226/buffer-overflow-attack math.h volatile double test double function3 test return exp test double function2 return log test double function1 int a.. test double function1 int a 5 0 a 7 int function3 return exp function2 int _tmain int argc _TCHAR argv double a function1..
Efficient Exponentiation For HUGE Numbers (I'm Talking Googols) http://stackoverflow.com/questions/8771713/efficient-exponentiation-for-huge-numbers-im-talking-googols division and denotes modulus This means I can solve exponentiation in a logarithmic number of multiplications. But to.. '0' return result int counter 0 string m_pow string a int exp counter if exp 1 return a if exp 0 return 1 string p m_pow a.. int counter 0 string m_pow string a int exp counter if exp 1 return a if exp 0 return 1 string p m_pow a exp 2 string res..
|