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#' @useDynLib jsonlite R_num_to_char
num_to_char <- function(x, digits = NA, na_as_string = NA, use_signif = FALSE, always_decimal = FALSE){
if(is.na(digits)) digits <- NA_integer_;
stopifnot(is.numeric(x))
stopifnot(is.numeric(digits))
stopifnot(is.logical(na_as_string))
.Call(R_num_to_char, x, digits, na_as_string, use_signif, always_decimal)
}
#' @useDynLib jsonlite R_integer64_to_char
integer64_to_char <- function(x, na_as_string = TRUE){
.Call(R_integer64_to_char, x, na_as_string)
}
num_to_char_R <- function(x, digits = NA, na_as_string = NA){
if(is.na(digits)) digits <- NA_integer_;
stopifnot(is.numeric(x))
stopifnot(is.numeric(digits))
stopifnot(is.logical(na_as_string))
if(!is.integer(x) && !is.null(digits) && !is.na(digits)){
x <- round(x, digits)
}
#convert to strings
tmp <- as.character(x)
# in numeric variables, NA, NaN, Inf are replaced by character strings
if (any(missings <- which(!is.finite(x)))) {
if(is.na(na_as_string)){
tmp[missings] <- NA_character_;
} else if(na_as_string){
tmp[missings] <- wrapinquotes(x[missings])
} else {
tmp[missings] <- "null"
}
}
#returns a character vector
return(tmp)
}
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