Calling log(0)

Unrecoverable error received:
  Floating point exception: division by zero

Fatal signal received: Floating point exception
A stack backtrace will now follow ...
stack backtrace:

 pc:     afbc sp:    a7f1c  write_backtrace()
 pc:     b32c sp:    a7f48  post_signal()
 pc:    1d3cc sp:    a7f68  *** UnixLib error handler ***()

Register dump:

 a1:        0 a2:        0 a3:        0 a4:    a7f80
 v1:     837c v2:     a75c v3: e1a03000 v4: ef020042
 v5: e0833000 v6: e3a00004 sl: ef020057 fp: 3a000004
 ip: 6a000003 sp: ef020042 lr: e1530000 pc: 8afffff8

LDR     R0,&0001D884

 pc:     a75c sp:    a7f80  main()

