decimal

问题 I notice that jQuery Flot is rounding down the results. But I want to show the actual decimal value for the result when you hover over the peaks and valleys in the tooltip. But not the x or y axis labels, but the graph result itself. So instead of "44", I want "44.05". Is there anything I can do to make that work? Everything I'm seeing is just for the axis labels. 回答1: The tool tip should allow you to do this - have a look at this fiddle http://jsfiddle.net/Rnusy/ var previousPoint = null; $(

问题 I am not able to figure out how to get r to correctly show the head of my data. This is an assignment for Swirl, so I have to figure out how to write my code in a way that Swirl will accept as the answer. Swirl wants the final printout to look exactly like this: ## Pclass agecat Sex N survivors perc_survived ## <int> <fctr> <chr> <int> <int> <dbl> ## 1 Under 15 female 2 1 50.000000 ## 1 Under 15 male 3 3 100.000000 ## 1 15 to 50 female 70 68 97.142857 ## 1 15 to 50 male 72 32 44.444444 ## 1

问题 I want to convert a string representing the mantissa portion of a IEEE754 double. Cannot find if there is such a conversion method in Java, in order to avoid manually adding 1 + 1/2 + 1/4 + 1/8 etc. |0100000011001010000111110000000000000000000000000000000000000000 --> 13374 in IEEE754 |------------1010000111110000000000000000000000000000000000000000 --> mantissa part | 1.1010000111110000000000000000000000000000000000000000 --> restoring fixed value 1 String s = "1

问题 I need to store decimals into MySQL, which can have a varying precision. Therefore I would be interested to know which MySQL field type is absolutely equivalent to .NET's decimal structure, if any. I plan to use Dapper as a lightweight ORM. 回答1: The .net decimal can be different datatypes under the hood. .net formats MySQL ---------------------------------------------------- Decimal(Double) Float Decimal(Int32) DECIMAL Decimal(Int32()) DECIMAL Decimal(Int64) DECIMAL Decimal(Single) DECIMAL

问题 May be my question is silly, But I didn't find any Solution for this. Actually, I want to Store Big Price Amount i.e. 9999999999.99 in Sqlite Database and want to retrive it back. I tried with TEXT, DOUBLE, REAL, LONG Datatypes. Unfortunately when i do this, it returns me back unwanted value i.e. 9.999999999.. . Please suggest me if you have solution for this, or guide me. 回答1: The defined column type affinity TEXT , REAL , NUMERIC , VARCHAR , RUMPLESTILTSKIN ( yes it works ), has little

问题 This question already has answers here : Is floating point math broken? (31 answers) Closed 3 years ago . From mathematics we know that the cosine of a 90 degree angle is 0 but Python says it's a bit more than that. import math math.cos(math.radians(90)) 6.123233995736766e-17 What's the matter between Python and the number "0"? 回答1: Repeat after me: Computers cannot process real numbers. Python uses double precision IEEE floats, which round to 53 binary digits of precision and have limits on

问题 decimal d1 = 4.0m; decimal d2 = 40.0m; decimal d = d1 / d2; string repr = d.ToString(); On Windows, I get "0.1" for repr. On Mono (Xamarin Android), I get "0.1000000000000000000000000000" or so. What gives? Also, I've seen recommendations to divide by 1.0000000000000000000000000000m to get rid of unwanted trailing zeroes. That doesn't work either on Xamarin Android. Known bug? Or technically not a bug - is this allowed in conformance with the standard? To get rid of the zeroes, I'm converting

问题 The Percent_Failure in the query below is giving results as either 1.00 or 0.00. Can anyone help me understand why it's not giving me the actual decimal? SELECT sf.hierarchy_name AS Hierarchy_Name, cl.cmh_id AS CMH_ID, cl.facility_name AS Clinic_Name, sf.billing_city AS City, sf.billing_state_code AS State, cl.num_types AS Num_Device_Dypes, cl.num_ssids AS Num_SSIDs, SUM(CAST(CASE WHEN (d.mdm_client_version NOT LIKE '1.14%' AND d.type = 'Wallboard') OR (d.mdm_client_version NOT LIKE '1.14%'

问题 Given a value x and an integer n (assigned at runtime), I want to print x to exactly n digits after the decimal (after rounding if needed). print(round(x, n)) works fine for (x,n)=(3.141592, 3) but for (x,n)=(2.5,5) , it prints just 2.5 , not 2.50000 (5 digits after decimal point). If I knew n at runtime, say 5, I could do @printf("%.5f", x) But @printf being a macro needs n to be known at compile time. Is this possible using some show magic or something else? 回答1: Using the fresh new Format

问题 Given a value x and an integer n (assigned at runtime), I want to print x to exactly n digits after the decimal (after rounding if needed). print(round(x, n)) works fine for (x,n)=(3.141592, 3) but for (x,n)=(2.5,5) , it prints just 2.5 , not 2.50000 (5 digits after decimal point). If I knew n at runtime, say 5, I could do @printf("%.5f", x) But @printf being a macro needs n to be known at compile time. Is this possible using some show magic or something else? 回答1: Using the fresh new Format