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%h support in fmt.printf for hexadecimal floats

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gingerBill
2019-03-15 23:22:05 +00:00
parent 332e598357
commit 231f3cc15a
1 changed files with 19 additions and 0 deletions
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core/fmt/fmt.odin
+19
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@@ -619,6 +619,25 @@ fmt_float :: proc(fi: ^Info, v: f64, bit_size: int, verb: rune) {
_pad(fi, str[1:]); _pad(fi, str[1:]);
} }
case 'h', 'H':
prev_fi := fi^;
defer fi^ = prev_fi;
fi.hash = false;
fi.width = bit_size;
fi.zero = true;
fi.plus = false;
u: u64;
switch bit_size {
case 32: u = u64(transmute(u32)f32(v));
case 64: u = transmute(u64)v;
case: panic("Unhandled float size");
}
strings.write_string(fi.buf, "0h");
_fmt_int(fi, u, 16, false, bit_size, verb == 'h' ? __DIGITS_LOWER : __DIGITS_UPPER);
case: case:
fmt_bad_verb(fi, verb); fmt_bad_verb(fi, verb);
} }