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Name printedNumber's dp cases, and say what prints and proveNumber a builtin sets

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Lilleman auf Larv
2026-09-29 04:10:36 +02:00
committed by Lillem4n
parent be9ab3efcf
commit 0dfa615b54
5 changed files with 27 additions and 16 deletions
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value.go
+14 -7
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@@ -261,16 +261,23 @@ func bounded(lo, hi float64, integral bool) proven {
func magnitude(v proven) float64 { return math.Max(math.Abs(v.lo), math.Abs(v.hi)) }
// printedNumber is what a token printing v to dp decimals holds: an integer when whole
// and within int64, else a number.
// printedNumber is what a token printing v to dp decimals holds.
func printedNumber(token string, v proven, dp int) proven {
if dp >= 0 {
half, _ := strconv.ParseFloat("5e-"+strconv.Itoa(dp+1), 64)
v = proven{lo: v.lo - half, hi: v.hi + half, nonZero: math.Max(0, v.nonZero-half), integral: v.integral || dp == 0}
}
if dp != 0 && !(dp < 0 && v.integral) {
if dp == shortestDecimals {
if v.integral { // a whole value prints with no point
return printedInteger(token, v)
}
return printing(token, DataTypeNumber, v)
}
half, _ := strconv.ParseFloat("5e-"+strconv.Itoa(dp+1), 64)
v = proven{lo: v.lo - half, hi: v.hi + half, nonZero: math.Max(0, v.nonZero-half), integral: v.integral || dp == 0}
if dp == 0 {
return printedInteger(token, v)
}
return printing(token, DataTypeNumber, v)
}
func printedInteger(token string, v proven) proven {
v = printing(token, DataTypeInteger, v)
if !(magnitude(v) < math.MaxInt64) {
v.not[DataTypeInteger] = fmt.Sprintf("{%s} is not proven within int64", token)