cosmopolitan/test/libc/fmt/strtoimax_test.c
Justine Tunney a8945714e8 Make gdtoa less tunable (#104)
The -fno-math-errno flag shouldn't impact libraries since it's mostly
intended for permitting the compiler to generate sqrt() instructions.
2021-03-07 16:41:59 -08:00

87 lines
3.7 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/bits/bits.h"
#include "libc/errno.h"
#include "libc/fmt/conv.h"
#include "libc/testlib/testlib.h"
TEST(strtoimax, testZero) {
EXPECT_EQ(0, strtoimax("0", NULL, 0));
}
TEST(strtoimax, testDecimal) {
EXPECT_EQ(-123, strtoimax("-123", NULL, 0));
}
TEST(strtoimax, testHex) {
EXPECT_EQ(-255, strtoimax("-0xff", NULL, 0));
EXPECT_EQ(255, strtoimax("0xff", NULL, 16));
}
TEST(strtoimax, testOctal) {
EXPECT_EQ(-123, strtoimax("-0173", NULL, 0));
EXPECT_EQ(123, strtoimax("0173", NULL, 8));
}
TEST(strtoimax, testBinary) {
EXPECT_EQ(-42, strtoimax("-0b101010", NULL, 0));
EXPECT_EQ(42, strtoimax("0b101010", NULL, 2));
}
TEST(strtoimax, testLimits) {
EXPECT_EQ(
((uintmax_t)0xffffffffffffffff) << 64 | (uintmax_t)0xffffffffffffffff,
strtoimax("-1", NULL, 0));
EXPECT_EQ(
((uintmax_t)0x7fffffffffffffff) << 64 | (uintmax_t)0xffffffffffffffff,
strtoimax("0x7fffffffffffffffffffffffffffffff", NULL, 0));
}
TEST(strtoimax, testOutsideLimit) {
errno = 0;
EXPECT_EQ(
((uintmax_t)0x7fffffffffffffff) << 64 | (uintmax_t)0xffffffffffffffff,
strtoimax("0x80000000000000000000000000000000", NULL, 0));
EXPECT_EQ(ERANGE, errno);
errno = 0;
EXPECT_EQ(((uintmax_t)0x8000000000000000) << 64 | 0x0000000000000000,
strtoimax("-0x80000000000000000000000000000001", NULL, 0));
EXPECT_EQ(ERANGE, errno);
}
TEST(strtoul, neghex) {
errno = 0;
ASSERT_EQ(-16, (long)strtoul("0xfffffffffffffff0", NULL, 0));
EXPECT_EQ(0, errno);
}
TEST(strtol, testOutsideLimit) {
errno = 0;
EXPECT_EQ(0x7fffffffffffffff, strtol("0x8000000000000000", NULL, 0));
EXPECT_EQ(ERANGE, errno);
errno = 0;
EXPECT_EQ(0x8000000000000000, strtol("-0x8000000000000001", NULL, 0));
EXPECT_EQ(ERANGE, errno);
errno = 0;
EXPECT_EQ(0x8000000000000001, strtol("-9223372036854775807", NULL, 0));
EXPECT_EQ(0, errno);
errno = 0;
EXPECT_EQ(0x8000000000000000, strtol("-9223372036854775808", NULL, 0));
EXPECT_EQ(0, errno);
}