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Merge pull request #3675 from Feoramund/fix-partial-infinity

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Fix partial parsing of `infinity`
This commit is contained in:
gingerBill
2024-06-05 12:48:44 +01:00
committed by GitHub
parent adcda88501 25feff3eb4
commit a747e47582
5 changed files with 163 additions and 68 deletions
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core/strconv/strconv.odin
+9 -6
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@@ -882,13 +882,16 @@ parse_f64_prefix :: proc(str: string) -> (value: f64, nr: int, ok: bool) {
s = s[1:]
fallthrough
case 'i', 'I':
n = common_prefix_len_ignore_case(s, "infinity")
if 3 < n && n < 8 { // "inf" or "infinity"
n = 3
}
if n == 3 || n == 8 {
m := common_prefix_len_ignore_case(s, "infinity")
if 3 <= m && m < 9 { // "inf" to "infinity"
f = 0h7ff00000_00000000 if sign == 1 else 0hfff00000_00000000
n = nsign + 3
if m == 8 {
// We only count the entire prefix if it is precisely "infinity".
n = nsign + m
} else {
// The string was either only "inf" or incomplete.
n = nsign + 3
}
ok = true
return
}