json_decoder_is_unsigned()
QNX SDP8.0JSON Library ReferenceAPIDeveloper
Determine whether a node represents an unsigned integer value
Synopsis:
#include <sys/json.h>bool json_decoder_is_unsigned(json_decoder_t *decoder,
const char *name)Arguments:
- decoder
- The JSON decoder instance.
- name
- The name of the node to test, or NULL to test the current node.
Library:
libjsonDescription:
This function returns returns true if the value of the specified or current node can be returned using json_decoder_get_int_ull(), or false otherwise.
Four functions can return numeric values: json_decoder_get_int(), json_decoder_get_int_ll(), json_decoder_get_int_ull(), and json_decoder_get_double(). The underlying value determines which of these functions can return the value without error. Call this function to test whether the value is both a non-negative integer and within the range of an unsigned long long.
Returns:
true- The node represents an integer value that can be accessed using json_decoder_get_int_ull().false- The node's value cannot be returned by calling json_decoder_get_int_ull().
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