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Support %lf and %lF in format string

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Per C99 this should resolve to double.
This commit is contained in:
Alison Winters 2021-02-27 08:10:58 +00:00 committed by Justine Tunney
parent 35c7edac49
commit 5d334b9ce0
2 changed files with 5 additions and 0 deletions
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4
libc/fmt/palandprintf.c
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@ -215,6 +215,10 @@ hidden int palandprintf(void *fn, void *arg, const char *format, va_list va) {
signbit = sizeof(intmax_t) * 8 - 1;
break;
case 'l':
if (format[1] == 'f' || format[1] == 'F') {
format++;
break;
}
if (format[1] == 'l') format++;
/* fallthrough */
case 't': /* ptrdiff_t */

1
test/libc/fmt/palandprintf_test.c
View file

@ -421,6 +421,7 @@ TEST(sprintf, test_float) {
EXPECT_STREQ("+42.90", Format("%+6.2f", 42.8952));
EXPECT_STREQ("+42.9", Format("%+5.1f", 42.9252));
EXPECT_STREQ("42.500000", Format("%f", 42.5));
EXPECT_STREQ("42.500000", Format("%lf", 42.5));
EXPECT_STREQ("42.5", Format("%.1f", 42.5));
EXPECT_STREQ("42167.000000", Format("%f", 42167.0));
EXPECT_STREQ("-12345.987654321", Format("%.9f", -12345.987654321));