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php Programming Glossary: roundingWhy would on earth PHP convert the result of (int) ((0.1+0.7)*10) to 7, not 8? http://stackoverflow.com/questions/11573378/why-would-on-earth-php-convert-the-result-of-int-0-10-710-to-7-not-8 result will be 7 Why does that happen php floating point rounding share improve this question It is all about float . See.. format which will give a maximum relative error due to rounding in the order of 1.11e 16. Non elementary arithmetic operations..
Why are floating point numbers printed so differently? http://stackoverflow.com/questions/14082287/why-are-floating-point-numbers-printed-so-differently in some sense such as being the value you would get by rounding the exact value to the number of digits shown . When programming..
Can I rely on PHP php.ini precision workaround for floating point issue http://stackoverflow.com/questions/14587290/can-i-rely-on-php-php-ini-precision-workaround-for-floating-point-issue exact representation as a binary fraction so there is some rounding going on. A good start is What Every Computer Scientist Should..
In PHP, how do I generate a big pseudo-random number? http://stackoverflow.com/questions/1479823/in-php-how-do-i-generate-a-big-pseudo-random-number
php float calculation 2 decimal point http://stackoverflow.com/questions/1604696/php-float-calculation-2-decimal-point 34.55 a do some calculation to get this figure b is doing rounding nearest 0.05 to get this figure what happen is c b a supposedly.. This really frustrated me. php floating point decimal rounding share improve this question Try sprintf .2f c Floating point.. 3455 c b a sprintf .2f c 100.0 This way you won't have any rounding errors if you do a lot of calculations before printing. share..
http://stackoverflow.com/questions/2661817/php-calculate-float Yeah round i 2 The discrepancies are usually so small that rounding it to 2 decimals will almost always solve the problem. share..
http://stackoverflow.com/questions/3094173/php-round-decimals get decimals like the one in the column number above. php rounding share improve this question function round_to_nearest_half..
Arithmetic with Arbitrarily Large Integers in PHP http://stackoverflow.com/questions/37391/arithmetic-with-arbitrarily-large-integers-in-php setting of the bcmath extension because there can't be any rounding errors in my 128 bit integers they must be precise. I'm also..
If dealing with money in a float is bad, then why does money_format() do it? http://stackoverflow.com/questions/4662138/if-dealing-with-money-in-a-float-is-bad-then-why-does-money-format-do-it floating point inaccuracies change my figures For pure rounding display purposes you're safe as long as the absolute floating.. point representation error is less than 0.005 so that rounding to the nearest cent is correct . With IEEE 754 single precision..
php integer and float comparison mismatch http://stackoverflow.com/questions/5230305/php-integer-and-float-comparison-mismatch I realise that floats and int are different but given the rounding i would have expected the two values to match. And I have solved.. amounts of money always use the BC Math extension . For rounding with BC Math you can use this technique x '211.9452' x bcadd..
unit testing and Static methods http://stackoverflow.com/questions/5961023/unit-testing-and-static-methods I have always assumed static functions were a nice way of rounding up utility functions in a class. For example I often use static..
How could two equal numbers not be equal in PHP http://stackoverflow.com/questions/7129775/how-could-two-equal-numbers-not-be-equal-in-php you're liable to get small differences due to the rounding involved. Instead if you want to see if two floating point numbers..
What's the disadvantage of mt_rand? http://stackoverflow.com/questions/7808021/whats-the-disadvantage-of-mt-rand kind of bias stated in alternate tie breaking rules for rounding I don't think it really matters since the bias is not really..
Generate random player strengths in a pyramid structure (PHP) http://stackoverflow.com/questions/921570/generate-random-player-strengths-in-a-pyramid-structure-php value of 1.1 which wasn't included before because of the rounding and to fix the name of the mt_getrandmax function share improve..
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