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https://github.com/jart/cosmopolitan.git
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2bd1e72d5a
We can put this back the moment someone requests it. Pain-free garbage collection for the C language is pretty cool. All it does is overwrite the return address with a trampoline that calls free(). It's not clear what it should be named if it's made a public API.
58 lines
3 KiB
C
58 lines
3 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 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/math.h"
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#include "libc/runtime/gc.internal.h"
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#include "libc/testlib/testlib.h"
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#include "libc/x/x.h"
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#define fabsl(x) fabsl(VEIL("t", (long double)(x)))
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#define fabs(x) fabs(VEIL("x", (double)(x)))
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#define fabsf(x) fabsf(VEIL("x", (float)(x)))
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TEST(fabsl, test) {
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EXPECT_STREQ("0", gc(xdtoal(fabsl(-0.))));
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EXPECT_STREQ("0", gc(xdtoal(fabsl(-0.))));
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EXPECT_STREQ("NAN", gc(xdtoal(fabsl(NAN))));
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EXPECT_STREQ("INFINITY", gc(xdtoal(fabsl(INFINITY))));
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EXPECT_STREQ("INFINITY", gc(xdtoal(fabsl(-INFINITY))));
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}
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TEST(fabs, test) {
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EXPECT_STREQ("0", gc(xdtoa(fabs(-0.))));
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EXPECT_STREQ("0", gc(xdtoa(fabs(-0.))));
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EXPECT_STREQ("NAN", gc(xdtoa(fabs(NAN))));
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EXPECT_STREQ("INFINITY", gc(xdtoa(fabs(INFINITY))));
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EXPECT_STREQ("INFINITY", gc(xdtoa(fabs(-INFINITY))));
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}
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TEST(fabsf, test) {
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EXPECT_STREQ("0", gc(xdtoaf(fabsf(-0.))));
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EXPECT_STREQ("0", gc(xdtoaf(fabsf(-0.))));
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EXPECT_STREQ("NAN", gc(xdtoaf(fabsf(NAN))));
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EXPECT_STREQ("INFINITY", gc(xdtoaf(fabsf(INFINITY))));
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EXPECT_STREQ("INFINITY", gc(xdtoaf(fabsf(-INFINITY))));
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}
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TEST(fabs, stuff) {
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EXPECT_LDBL_EQ(3.14, fabs(3.14));
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EXPECT_LDBL_EQ(3.14, fabs(-3.14));
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EXPECT_EQ(1, !!isnan(fabs(NAN)));
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EXPECT_EQ(1, !!isnan(fabs(-NAN)));
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EXPECT_EQ(0, !!signbit(fabs(-NAN)));
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}
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