Same as the related overload above for asInt64.
asInt64
Declared in <bdljsn_jsonnumber.h>
<bdljsn_jsonnumber.h>
int asInt64(bsls::Types::Int64* result) const;
0 on success, or k_OVERFLOW, k_UNDERFLOW, or k_NOT_INTEGRAL on failure
k_OVERFLOW
k_UNDERFLOW
k_NOT_INTEGRAL