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compiler: test float to int conversions and fix upper-bound calculation

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This commit is contained in:
Nia Weiss
2021-01-16 14:47:41 -05:00
committed by Ayke
parent a90865506d
commit a5cf704d83
6 changed files with 144 additions and 7 deletions
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testdata/float.go
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+12 -3
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@@ -29,12 +29,21 @@ func main() {
var f2 float32 = 5.7
var f3 float32 = -2.3
var f4 float32 = -11.8
println(int32(f1), int32(f2), int32(f3), int32(f4))
// float -> int saturating behavior
var f5 float32 = -1
var f6 float32 = 256
var f7 float32 = -129
var f8 float32 = 0
f8 /= 0
println(int32(f1), int32(f2), int32(f3), int32(f4), uint8(f5), uint8(f6), int8(f7), int8(f6), uint8(f8), int8(f8))
f8 := float32(^uint32(0))
f9 := float32(int32(-2147483648))
f10 := float32(int32(2147483647))
var inf float32 = 1
inf /= 0
var nan float32 = 0
nan /= 0
println(uint8(f5), uint8(f6), int8(f7), int8(f6), uint32(f8), int32(f9), int32(f10),
uint8(inf), uint8(-inf), int8(inf), int8(-inf), uint8(nan), int64(nan))
// int -> float
var i1 int32 = 53