mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
f882887178
Before this commit, cosmopolitan had some issues with handling arguments of 0 and signs, such as returning an incorrect sign when the input value == -0.0, and incorrectly handling ndigit == 0 on fcvt (ndigit determines the amount of digits *after* the radix character on fcvt, thus the parts before it still must be outputted before fcvt's job is completely done). This patch fixes these issues, and adds tests with corresponding inputs.
68 lines
2.9 KiB
C
68 lines
2.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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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/mem/gc.h"
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#include "libc/stdlib.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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#include "libc/x/xasprintf.h"
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TEST(fcvt, test) {
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int decpt, sign;
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ASSERT_STREQ("3.14159265358979",
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gc(xasprintf("%.14f", 3.14159265358979323846)));
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ASSERT_STREQ("3141592653589793",
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fcvt(3.14159265358979323846, 15, &decpt, &sign));
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ASSERT_EQ(1, decpt);
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ASSERT_EQ(0, sign);
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}
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TEST(ecvt, minus0) {
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int decpt = 110000000, sign = 110000000;
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ASSERT_STREQ("00000", ecvt(-0.0, 5, &decpt, &sign));
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ASSERT_LE(0, decpt);
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ASSERT_GE(1, decpt);
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ASSERT_EQ(1, sign);
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}
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TEST(ecvt, minus0ndigits0) {
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int decpt = 110000000, sign = 110000000;
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ASSERT_STREQ("", ecvt(-0.0, 0, &decpt, &sign));
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ASSERT_LE(0, decpt);
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ASSERT_GE(1, decpt);
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ASSERT_EQ(1, sign);
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}
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TEST(fcvt, ndigits0) {
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int decpt = 110000000, sign = 110000000;
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ASSERT_STREQ("1", fcvt(0.6, 0, &decpt, &sign));
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ASSERT_EQ(1, decpt);
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ASSERT_EQ(0, sign);
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}
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TEST(fcvt, minus0ndigits0) {
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int decpt = 110000000, sign = 110000000;
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ASSERT_STREQ("", fcvt(-0.0, 0, &decpt, &sign));
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ASSERT_LE(0, decpt);
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ASSERT_GE(1, decpt);
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ASSERT_EQ(1, sign);
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}
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