[GAP Forum] log_a b in floating point arithmetic

[hedtke]

Dear Forum,

is there a way to compute log_a b in floating point arithmetic in GAP?

In the Forum Archive I found two solutions, but they didn't work:
1) there is a function LOG_FLOAT, but when I used it, GAP crashed.
2) there was a file "decimal.g" on ftp.math.rwth-aachen.de which may do what I want, but the FTP server is not available.

Can you help me?

Thanks,
Ivo