round to 1 decimal place

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PHP to take the decimal place function has sprintf,ceil,floor,round and so on functions to achieve rounding, let's look at the specific example. This article will use PHP to round up numbers to preserve n decimal places, and a small summary of how

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Label:Transferred from: http://www.cnblogs.com/lovewife/articles/2466543.htmlSingle precision refers to a 4-byte floating-point number, which is the floatA double is a 8-byte floating-point number, which is doubleDecimal is a high precisionFloating

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Reply content:Because binary floating-point numbers do not solve this problem. First look at a phenomenon that is unrelated to round: >>> def Show(x):... "" prints a number, 20-bit precision "" "... Print(' {:. 20f} '.format(x))...

In the development process, you often encounter formatting to adjust decimals, such as two digits after the decimal point, and so on. Methods are also quite common, as is the memo below. The first, using Math.Round var original=28.453 1)//round "or

PHP rounding, rounding, round function Use example, rounding round Decimal Example: PHP reserved two decimal places and rounded Copy the Code code as follows:$n = 0.1265489;Echo sprintf ("%.2f", $n); 0.13 As you can see, we used the sprintf

Tags: onchange run after jquery div oat amp pos Blur<script> var n=3.143423423;Alert (N.tostring (). Split (".") [1].length]; JS Javascrip intercept after a few decimal placesFirst, the use of Math.Roundvar original=28.4531)//round

A ceil is a function that gets a value upward; Floor is the function of rounding out the decimal place to get a value; Round is a function that is used for rounding. CeilDefinition and Usage: The Ceil () function rounds up to the nearest