julia> versioninfo()
Julia Version 1.7.0-DEV.1011
Commit 4e176ac965* (2021-04-26 08:26 UTC)
Platform Info:
  OS: Linux (x86_64-linux-gnu)
  CPU: Intel(R) Xeon(R) E-2288G CPU @ 3.70GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-11.0.1 (ORCJIT, skylake)
Environment:
  JULIA_EDITOR = code
  JULIA_NUM_THREADS = 8

julia> Float64(-2)^5
-32.0

julia> Float32(-2)^5
ERROR: DomainError with -2.0:
log2 will only return a complex result if called with a complex argument. Try log2(Complex(x)).
Stacktrace:
 [1] throw_complex_domainerror(f::Symbol, x::Float64)
   @ Base.Math ./math.jl:33
 [2] _log(x::Float64, base::Val{2}, func::Symbol)
   @ Base.Math ./special/log.jl:304
 [3] log2
   @ ./special/log.jl:268 [inlined]
 [4] ^
   @ ./math.jl:914 [inlined]
 [5] ^
   @ ./math.jl:942 [inlined]
 [6] literal_pow(#unused#::typeof(^), x::Float32, #unused#::Val{5})
   @ Base ./intfuncs.jl:315
 [7] top-level scope
   @ REPL[34]:1

julia> Float16(-2)^5
ERROR: DomainError with -2.0:
log2 will only return a complex result if called with a complex argument. Try log2(Complex(x)).
Stacktrace:
 [1] throw_complex_domainerror(f::Symbol, x::Float64)
   @ Base.Math ./math.jl:33
 [2] _log(x::Float64, base::Val{2}, func::Symbol)
   @ Base.Math ./special/log.jl:304
 [3] log2
   @ ./special/log.jl:268 [inlined]
 [4] ^
   @ ./math.jl:914 [inlined]
 [5] ^
   @ ./math.jl:942 [inlined]
 [6] ^
   @ ./math.jl:944 [inlined]
 [7] literal_pow(#unused#::typeof(^), x::Float16, #unused#::Val{5})
   @ Base ./intfuncs.jl:315
 [8] top-level scope
   @ REPL[40]:1