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remove compile-time interpolation #47

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Feb 25, 2020
Merged

remove compile-time interpolation #47

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70 changes: 34 additions & 36 deletions src/Quadmath.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -263,46 +263,44 @@ trunc(::Type{Unsigned}, x::Float128) = trunc(Int,x)
trunc(::Type{Integer}, x::Float128) = trunc(Int,x)

for Ti in (Int32, Int64, Int128, UInt32, UInt64, UInt128)
let Tf = Float128
if Ti <: Unsigned || sizeof(Ti) < sizeof(Tf)
# Here `Tf(typemin(Ti))-1` is exact, so we can compare the lower-bound
# directly. `Tf(typemax(Ti))+1` is either always exactly representable, or
# rounded to `Inf` (e.g. when `Ti==UInt128 && Tf==Float32`).
@eval begin
function trunc(::Type{$Ti},x::$Tf)
if $(Tf(typemin(Ti))-one(Tf)) < x < $(Tf(typemax(Ti))+one(Tf))
return unsafe_trunc($Ti,x)
else
throw(InexactError(:trunc, $Ti, x))
end
if Ti <: Unsigned || sizeof(Ti) < sizeof(Float128)
# Here `Float128(typemin(Ti))-1` is exact, so we can compare the lower-bound
# directly. `Float128(typemax(Ti))+1` is either always exactly representable, or
# rounded to `Inf` (e.g. when `Ti==UInt128 && Float128==Float32`).
@eval begin
function trunc(::Type{$Ti},x::Float128)
if Float128(typemin($Ti)) - one(Float128) < x < Float128(typemax($Ti)) + one(Float128)
return unsafe_trunc($Ti,x)
else
throw(InexactError(:trunc, $Ti, x))
end
function (::Type{$Ti})(x::$Tf)
if ($(Tf(typemin(Ti))) <= x <= $(Tf(typemax(Ti)))) && (round(x, RoundToZero) == x)
return unsafe_trunc($Ti,x)
else
throw(InexactError($(Expr(:quote,Ti.name.name)), $Ti, x))
end
end
function (::Type{$Ti})(x::Float128)
if (Float128(typemin($Ti)) <= x <= Float128(typemax($Ti))) && (round(x, RoundToZero) == x)
return unsafe_trunc($Ti,x)
else
throw(InexactError($(Expr(:quote,Ti.name.name)), $Ti, x))
end
end
else
# Here `eps(Tf(typemin(Ti))) > 1`, so the only value which can be truncated to
# `Tf(typemin(Ti)` is itself. Similarly, `Tf(typemax(Ti))` is inexact and will
# be rounded up. This assumes that `Tf(typemin(Ti)) > -Inf`, which is true for
# these types, but not for `Float16` or larger integer types.
@eval begin
function trunc(::Type{$Ti},x::$Tf)
if $(Tf(typemin(Ti))) <= x < $(Tf(typemax(Ti)))
return unsafe_trunc($Ti,x)
else
throw(InexactError(:trunc, $Ti, x))
end
end
else
# Here `eps(Float128(typemin(Ti))) > 1`, so the only value which can be truncated to
# `Float128(typemin(Ti)` is itself. Similarly, `Float128(typemax(Ti))` is inexact and will
# be rounded up. This assumes that `Float128(typemin(Ti)) > -Inf`, which is true for
# these types, but not for `Float16` or larger integer types.
@eval begin
function trunc(::Type{$Ti},x::Float128)
if Float128(typemin($Ti)) <= x < Float128(typemax($Ti))
return unsafe_trunc($Ti,x)
else
throw(InexactError(:trunc, $Ti, x))
end
function (::Type{$Ti})(x::$Tf)
if ($(Tf(typemin(Ti))) <= x < $(Tf(typemax(Ti)))) && (round(x, RoundToZero) == x)
return unsafe_trunc($Ti,x)
else
throw(InexactError($(Expr(:quote,Ti.name.name)), $Ti, x))
end
end
function (::Type{$Ti})(x::Float128)
if (Float128(typemin($Ti)) <= x < Float128(typemax($Ti))) && (round(x, RoundToZero) == x)
return unsafe_trunc($Ti,x)
else
throw(InexactError($(Expr(:quote,Ti.name.name)), $Ti, x))
end
end
end
Expand Down