75 lines
2.5 KiB
Julia
75 lines
2.5 KiB
Julia
# This file is a part of Julia. License is MIT: https://julialang.org/license
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using Base.Test
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# test the basic floating point functions
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# flipsign
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for elty in (Float32,Float64)
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x = convert(elty,-2.0)
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x = flipsign(x,-1.0)
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@test flipsign(x,big(-1.0)) == convert(elty,-2.0)
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end
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# maxintfloat
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@test maxintfloat(Float16) === Float16(2048f0)
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for elty in (Float16,Float32,Float64)
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@test maxintfloat(rand(elty)) === maxintfloat(elty)
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end
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@test maxintfloat() === maxintfloat(Float64)
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@test maxintfloat(Float64, Int32) === 2147483647.0
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@test maxintfloat(Float32, Int32) === maxintfloat(Float32)
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@test maxintfloat(Float64, Int16) === 32767.0
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@test maxintfloat(Float64, Int64) === maxintfloat(Float64)
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# isinteger
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for elty in (Float16,Float32,Float64)
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@test !isinteger(elty(1.2))
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@test isinteger(elty(12))
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@test isinteger(zero(elty))
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@test isinteger(-zero(elty))
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@test !isinteger(nextfloat(zero(elty)))
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@test !isinteger(prevfloat(zero(elty)))
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@test isinteger(maxintfloat(elty))
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@test isinteger(-maxintfloat(elty))
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@test !isinteger(elty(Inf))
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@test !isinteger(-elty(Inf))
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@test !isinteger(elty(NaN))
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end
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# num2hex, hex2num
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for elty in (Float16,Float32,Float64), _ = 1:10
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x = rand(elty)
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@test hex2num(num2hex(x)) ≈ x
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end
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# round
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for elty in (Float32,Float64)
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x = rand(elty)
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A = fill(x,(10,10))
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@test round.(A,RoundToZero) == fill(trunc(x),(10,10))
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@test round.(A,RoundUp) == fill(ceil(x),(10,10))
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@test round.(A,RoundDown) == fill(floor(x),(10,10))
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A = fill(x,(10,10,10))
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@test round.(A,RoundToZero) == fill(trunc(x),(10,10,10))
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@test round.(A,RoundUp) == fill(ceil(x),(10,10,10))
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@test round.(A,RoundDown) == fill(floor(x),(10,10,10))
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for elty2 in (Int32,Int64)
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A = fill(x,(10,))
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@test round.(elty2,A,RoundToZero) == fill(trunc(elty2,x),(10,))
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@test round.(elty2,A,RoundUp) == fill(ceil(elty2,x),(10,))
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@test round.(elty2,A,RoundDown) == fill(floor(elty2,x),(10,))
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A = fill(x,(10,10))
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@test round.(elty2,A,RoundToZero) == fill(trunc(elty2,x),(10,10))
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@test round.(elty2,A,RoundUp) == fill(ceil(elty2,x),(10,10))
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@test round.(elty2,A,RoundDown) == fill(floor(elty2,x),(10,10))
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A = fill(x,(10,10,10))
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@test round.(elty2,A,RoundToZero) == fill(trunc(elty2,x),(10,10,10))
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@test round.(elty2,A,RoundUp) == fill(ceil(elty2,x),(10,10,10))
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@test round.(elty2,A,RoundDown) == fill(floor(elty2,x),(10,10,10))
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@test round.(elty2,A) == fill(round(elty2,x),(10,10,10))
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end
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end
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