divide

Why does Decimal.Divide(int, int) work, but not (int / int)?

由 本秂侑毒 提交于 2019-11-27 19:12:32
How come dividing two 32 bit int numbers as ( int / int ) returns to me 0 , but if I use Decimal.Divide() I get the correct answer? I'm by no means a c# guy. int is an integer type; dividing two ints performs an integer division, i.e. the fractional part is truncated since it can't be stored in the result type (also int !). Decimal , by contrast, has got a fractional part. By invoking Decimal.Divide , your int arguments get implicitly converted to Decimal s. You can enforce non-integer division on int arguments by explicitly casting at least one of the arguments to a floating-point type, e.g.:

Dividing two integers to a double in java

由 吃可爱长大的小学妹 提交于 2019-11-27 15:28:41
I can see this is a common problem for new programmers, however I didn't succeed in implementing any of the solution to my code. Basically I want to divide w and v, which must be saved to a double variable. But it prints [0.0, 0.0, ... , 0.0] public static double density(int[] w, int[] v){ double d = 0; for(L = 0; L < w.length; L++){ d = w[L] /v[L]; } return d; } This line here d = w[L] /v[L]; takes place over several steps d = (int)w[L] / (int)v[L] d=(int)(w[L]/v[L]) //the integer result is calculated d=(double)(int)(w[L]/v[L]) //the integer result is cast to double In other words the

Python Class __div__ issue

由 僤鯓⒐⒋嵵緔 提交于 2019-11-27 07:35:29
问题 The tuples represent fractions. I'm trying to divide the fractions by multiplying by the reciprical class Test(): def __init__(self): self._x=(1,2) def __div__(self,div_fraction): return (self._x[0]*div_fraction[1],self._x[1]*div_fraction[0]) y=Test() z=y/(1,3) print(z) Gives me: Traceback (most recent call last): File "E:/test.py", line 8, in <module> z=y/(1,3) TypeError: unsupported operand type(s) for /: 'Test' and 'tuple' Yet when I change the __div__ to __mul__ and use * instead of / it

Odd behaviors when dividing doubles in Java

由 两盒软妹~` 提交于 2019-11-27 06:38:05
问题 When I divide 317 by 219 in Java using doubles I get 1. For example: double b = 317/219; System.out.println(b); Output is: 1. Is this because it is a recurring decimal? Have had to use BigDecimal instead which is annoying. 回答1: Try this double b = 317/219D; The default type of coded numbers in java is int , so with the code as you have it java is working with two int numbers and the result of the division would then be int too, which will truncate the decimal part to give a final result of 1

Why does Decimal.Divide(int, int) work, but not (int / int)?

由 喜你入骨 提交于 2019-11-27 04:21:28
问题 How come dividing two 32 bit int numbers as ( int / int ) returns to me 0 , but if I use Decimal.Divide() I get the correct answer? I'm by no means a c# guy. 回答1: int is an integer type; dividing two ints performs an integer division, i.e. the fractional part is truncated since it can't be stored in the result type (also int !). Decimal , by contrast, has got a fractional part. By invoking Decimal.Divide , your int arguments get implicitly converted to Decimal s. You can enforce non-integer

C#: divide an int by 100

由 孤人 提交于 2019-11-27 04:07:22
问题 How do I divide an int by 100? eg: int x = 32894; int y = 32894 / 100; Why does this result in y being 328 and not 328.94 ? 回答1: When one integer is divided by another, the arithmetic is performed as integer arithmetic. If you want it to be performed as float, double or decimal arithmetic, you need to cast one of the values appropriately. For example: decimal y = ((decimal) x) / 100; Note that I've changed the type of y as well - it doesn't make sense to perform decimal arithmetic but then

Find if variable is divisible by 2

由 ε祈祈猫儿з 提交于 2019-11-27 00:24:55
问题 How do I figure out if a variable is divisible by 2? Furthermore I need do a function if it is and do a different function if it is not. 回答1: Use modulus: // Will evaluate to true if the variable is divisible by 2 variable % 2 === 0 回答2: Seriously, there's no jQuery plugin for odd/even checks? Well, not anymore - releasing "Oven" a jQuery plugin under the MIT license to test if a given number is Odd/Even. Source code is also available at http://jsfiddle.net/7HQNG/ Test-suites are available at

Dividing two integers to a double in java

由 ◇◆丶佛笑我妖孽 提交于 2019-11-26 17:09:56
问题 I can see this is a common problem for new programmers, however I didn't succeed in implementing any of the solution to my code. Basically I want to divide w and v, which must be saved to a double variable. But it prints [0.0, 0.0, ... , 0.0] public static double density(int[] w, int[] v){ double d = 0; for(L = 0; L < w.length; L++){ d = w[L] /v[L]; } return d; } 回答1: This line here d = w[L] /v[L]; takes place over several steps d = (int)w[L] / (int)v[L] d=(int)(w[L]/v[L]) //the integer
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