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36f52ea687
_PFLINK is supposed to automatically pull in required functions for
specific conversion specifiers. However, it fails to do so for the F,
G and E conversion specifiers.
This means that, for example, the following program:
#include <stdio.h>
int main()
{
printf("%F %G %E\n", .0, .0, .0);
}
fails to run correctly, printing "? ? ?" instead of
"0.000000 0 0.000000E+00".
This patch fixes this.
43 lines
2.5 KiB
C
43 lines
2.5 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Gabriel Ravier │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/fmt/fmt.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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// We specifically avoid the test framework because otherwise __fmt_dtoa is
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// always automatically pulled in from code in there - and this is what we're
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// testing for here
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int main() {
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char buffer[30];
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int snprintf_result = snprintf(buffer, sizeof(buffer), "%E", .0);
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if (strcmp(buffer, "0.000000E+00")) {
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kprintf(
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"error: snprintf gave us '%s' instead of the expected '0.000000E+00'\n",
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buffer);
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abort();
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}
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if (snprintf_result != 12) {
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kprintf("error: snprintf returned %d instead of 12\n", snprintf_result);
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abort();
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}
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}
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