decimal

问题 I'm trying to write a wrapper to ADO. A DECIMAL is one type a COM VARIANT can be, when the VARIANT type is VT_DECIMAL . I'm trying to put it in c native data type, and keep the variable value. it seem that the correct type is long double, but I get "no suitable conversion error". For example: _variant_t v; ... if(v.vt == VT_DECIMAL) { double d = (double)v; //this works but I'm afraid can be loss of data... long double ld1 = (long double)v; //error: more then one conversion from variant to

问题 I work with teams from multiple countries and sometimes I receive excel files that have another decimal separator than the one I use. Is there any formula to do that? I certainly could use a macro, but a formula would be much easier because I am not the only person in my company in need of this and a macro would be too complicated for the general Joe Public. Please keep in mind that I may have multiple separators in the same number, for example, 3.000.000,00 has 2 points for the thousands and

问题 assuming I have a function to manually calculate decimal from binary number *up to four characters(binary) *assuming you can only input 0 and 1 character below code works perfectly function bin_to_dec($bin) { $bin = str_split($bin); $bin = array_reverse($bin); $i = 0; $dec = 0; foreach($bin as $values) { $ans = $values * pow(2, $i); $dec += $ans; $i++; } return $dec; } $bin = 1010 //4 $bin = 1 //1 $bin = 0 //0 assuming if you cannot use function strrev(), str_split(), array_reverse(), how

问题 I would like to adjust quantity step for specific product categories to allow decimal numbers (0.5 steps specifically). A bit like in Set quantity minimum, maximum and step at product level in Woocommerce answer but for a specific decimal step and specific product categories. Any help is welcome. 回答1: To make it work for specific product categories for decimal quantity step you don't need settings at product level… In following code you will have to set on the first function your product

问题 I would like to adjust quantity step for specific product categories to allow decimal numbers (0.5 steps specifically). A bit like in Set quantity minimum, maximum and step at product level in Woocommerce answer but for a specific decimal step and specific product categories. Any help is welcome. 回答1: To make it work for specific product categories for decimal quantity step you don't need settings at product level… In following code you will have to set on the first function your product

问题 This question already has answers here : How to print number with commas as thousands separators? (27 answers) Closed 7 years ago . I don't really know the "name" for this problem, so it might be a incorrect title, but the problem is simple, if I have a number for example: number = 23543 second = 68471243 I want to it make print() like this. 23,543 68,471,243 I hope this explains enough or else add comments. Any help is appreciated! 回答1: If you only need to add comma as thousand separator and

问题 This question already has answers here : How to print number with commas as thousands separators? (27 answers) Closed 7 years ago . I don't really know the "name" for this problem, so it might be a incorrect title, but the problem is simple, if I have a number for example: number = 23543 second = 68471243 I want to it make print() like this. 23,543 68,471,243 I hope this explains enough or else add comments. Any help is appreciated! 回答1: If you only need to add comma as thousand separator and

问题 I'm looking for a way to convert decimal hours to HH:MM:SS For instance, as input: 4.927778 hours Desired output: 04:55:40 回答1: You can try something like below dh <- 4.927778 strftime(as.POSIXct(dh * 60 * 60, origin = Sys.Date(), tz = "GMT"), format = "%H:%M:%S") ## [1] "04:55:40" 回答2: You should be able to get an idea of what you need to do - a <- "4.927778 hours" a <- as.numeric(gsub(x = a,pattern = " hours", replacement = "")) h <- a%/% 1 m <- ((a%% 1)*60) %/% 1 s <- round((((a%% 1)*60) %

问题 I'm looking for a way to convert decimal hours to HH:MM:SS For instance, as input: 4.927778 hours Desired output: 04:55:40 回答1: You can try something like below dh <- 4.927778 strftime(as.POSIXct(dh * 60 * 60, origin = Sys.Date(), tz = "GMT"), format = "%H:%M:%S") ## [1] "04:55:40" 回答2: You should be able to get an idea of what you need to do - a <- "4.927778 hours" a <- as.numeric(gsub(x = a,pattern = " hours", replacement = "")) h <- a%/% 1 m <- ((a%% 1)*60) %/% 1 s <- round((((a%% 1)*60) %

问题 I'm looking for a way to convert decimal hours to HH:MM:SS For instance, as input: 4.927778 hours Desired output: 04:55:40 回答1: You can try something like below dh <- 4.927778 strftime(as.POSIXct(dh * 60 * 60, origin = Sys.Date(), tz = "GMT"), format = "%H:%M:%S") ## [1] "04:55:40" 回答2: You should be able to get an idea of what you need to do - a <- "4.927778 hours" a <- as.numeric(gsub(x = a,pattern = " hours", replacement = "")) h <- a%/% 1 m <- ((a%% 1)*60) %/% 1 s <- round((((a%% 1)*60) %