Blobmsg parse float/double

For Developers
1

Is it possible to parse float or double values using blobmsg_get_.. ?

i'm trying to parse c02 readings from the following json

{"id":1,"stype":2,"c02":759.18218994140625}

I could send the values as strings and parse them that way, then convert back to float, but i would like to avoid unnecessary processing if possible.

2

Afair there’s no dedicated getters, the approach is to use a union of both a double and a int64_t to convert the data payload to a double value, see e.g. here:

Edit: there is a double getter:
https://lxr.openwrt.org/source/libubox/blobmsg.h#L338

3

ahh, I had a older version of libubox on my host ...the BLOBMSG_TYPE_DOUBLE was not defined, oddly enough the getter was ...

anyhow, updated and now its working like a champ

Thanks jow