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KJSON_PUTDOUBLE(3) Library Functions Manual KJSON_PUTDOUBLE(3) NAME kjson_putdouble, kjson_putdoublep, kjson_string_putdouble -- put float- ing point content for kcgijson LIBRARY 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 char- acter 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 connec- tions, 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). In- dicates 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>. FreeBSD Ports 14.quarterly $Mdocdate$ KJSON_PUTDOUBLE(3)
NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUES | EXAMPLES | SEE ALSO | AUTHORS
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