KJSON_PUTDOUBLE(3)

NAME
kjson_putdouble, kjson_putdoublep, kjson_string_putdouble - put floating point content for kcgijson

LIBRARY
libkcgijson

SYNOPSIS
#include <sys/types.h>
#include <stdarg.h>
#include <stdint.h>
#include <kcgi.h>
#include <kcgijson.h>
enum kcgi_err
kjson_putdouble(struct kjsonreq *req, double v);
enum kcgi_err
kjson_putdoublep(struct kjsonreq *req, const char *name, double v);
enum kcgi_err
kjson_string_putdouble(struct kjsonreq *req, double v);

DESCRIPTION
Write a double-precision floating point v to a context req initialised with khtml_open(3). This formats the value using the "g" format character of printf(3). If v does not classify as normal, subnormal, or zero, it is output as null.

The kjson_putdouble() form is for array scopes, kjson_putdoublep() is for objects, and kjson_string_putdouble() for open strings.

Passing a NULL value to name for kjson_putdoublep(), is equivalent to calling kjson_putdouble().

RETURN VALUES
Returns an enum kcgi_err indicating the error state.

KCGI_OK
    Success (not an error).

KCGI_ENOMEM
    Internal memory allocation failure.

KCGI_HUP
    The output connection has been terminated. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.

KCGI_FORM
    The connection is still expecting headers with khttp_head(3). Indicates that khttp_body(3) did not return with success or was not invoked. For FastCGI connections, the current connection should be released with khttp_free(3) and parse loop reentered.

KCGI_SYSTEM
    Internal system error writing to the output stream.

KCGI_WRITER
    The incorrect form was used for the current scope, for example, an array-type write within an object.

EXAMPLES
The following outputs a simple JSON document. It assumes r is a struct kreq pointer. For brevity, it does not do any error checking.

    khttp_head(r, kresps[KRESP_STATUS],
      "%s", khttps[KHTTP_200]);
    khttp_head(r, kresps[KRESP_CONTENT_TYPE],
      "%s", kmimetypes[KMIME_APP_JSON]);
    khttp_body(r);
    kjson_open(&req, r);
    kjson_obj_open(&req);
    kjson_putdoublep(&req, "bar", 0.12345);
    kjson_arrayp_open(&req, "baz");
    kjson_putdouble(&req, (1.0 / 0.0)); /* null */
    kjson_close(&req);

SEE ALSO
kcgijson(3)

AUTHORS
Written by Kristaps Dzonsons <kristaps@bsd.lv>.