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cosmopolitan/test/libc/tinymath/exp_test.c

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Initial import
2020-06-15 14:18:57 +00:00
/*-*- 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 │
│ │
Change license
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│ 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. │
Initial import
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│ │
Change license
2020-12-28 01:18:44 +00:00
│ 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. │
Initial import
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╚─────────────────────────────────────────────────────────────────────────────*/
Add chibicc This program popped up on Hacker News recently. It's the only modern compiler I've ever seen that doesn't have dependencies and is easily modified. So I added all of the missing GNU extensions I like to use which means it might be possible soon to build on non-Linux and have third party not vendor gcc binaries.
2020-12-05 20:20:41 +00:00
#include "libc/math.h"
Remove garbage collector macro from header (#114) 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.
2021-03-08 04:23:29 +00:00
#include "libc/runtime/gc.internal.h"
Make C memory safe like Rust This change enables Address Sanitizer systemically w/ `make MODE=dbg`. Our version of Rust's `unsafe` keyword is named `noasan` which is used for two functions that do aligned memory chunking, like `strcpy.c` and we need to fix the tiny DEFLATE code, but that's it everything else is fabulous you can have all the fischer price security blankets you need Best of all is we're now able to use the ASAN data in Blinkenlights to colorize the memory dumps. See the screenshot below of a test program: https://justine.lol/blinkenlights/asan.png Which is operating on float arrays stored on the stack, with red areas indicating poisoned memory, and the green areas indicate valid memory.
2021-02-01 11:33:13 +00:00
#include "libc/stdio/stdio.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
Initial import
2020-06-15 14:18:57 +00:00
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
#define expl(x) expl(VEIL("t", (long double)(x)))
#define exp(x) exp(VEIL("x", (double)(x)))
#define expf(x) expf(VEIL("x", (float)(x)))
TEST(expl, test) {
EXPECT_STREQ("1", gc(xdtoal(expl(0))));
EXPECT_STREQ("1", gc(xdtoal(expl(-0.))));
EXPECT_STREQ("INFINITY", gc(xdtoal(expl(INFINITY))));
EXPECT_STREQ("0", gc(xdtoal(expl(-INFINITY))));
EXPECT_STREQ("NAN", gc(xdtoal(expl(NAN))));
EXPECT_STREQ("0", gc(xdtoal(expl(-132098844872390))));
EXPECT_STREQ("INFINITY", gc(xdtoal(expl(132098844872390))));
}
Make C memory safe like Rust This change enables Address Sanitizer systemically w/ `make MODE=dbg`. Our version of Rust's `unsafe` keyword is named `noasan` which is used for two functions that do aligned memory chunking, like `strcpy.c` and we need to fix the tiny DEFLATE code, but that's it everything else is fabulous you can have all the fischer price security blankets you need Best of all is we're now able to use the ASAN data in Blinkenlights to colorize the memory dumps. See the screenshot below of a test program: https://justine.lol/blinkenlights/asan.png Which is operating on float arrays stored on the stack, with red areas indicating poisoned memory, and the green areas indicate valid memory.
2021-02-01 11:33:13 +00:00
TEST(exp, test) {
Improve signal handling and math - Polyfill ucontext_t on FreeBSD/OpenBSD/NetBSD - Add tests confirming signals can edit CPU state - Work towards supporting ZIP filesystem on bare metal - Add more tinymath unit tests for POSIX conformance - Add X87 and SSE status flags to crash report - Fix some bugs in blinkenlights - Fix llvm build breakage
2021-02-26 02:30:17 +00:00
EXPECT_STREQ("1", gc(xdtoa(exp(0))));
EXPECT_STREQ("1", gc(xdtoa(exp(-0.))));
EXPECT_STREQ("INFINITY", gc(xdtoa(exp(INFINITY))));
EXPECT_STREQ("0", gc(xdtoa(exp(-INFINITY))));
EXPECT_STREQ("NAN", gc(xdtoa(exp(NAN))));
EXPECT_STREQ("0", gc(xdtoa(exp(-132098844872390))));
EXPECT_STREQ("INFINITY", gc(xdtoa(exp(132098844872390))));
}
TEST(expf, test) {
EXPECT_STREQ("1", gc(xdtoaf(expf(0))));
EXPECT_STREQ("1", gc(xdtoaf(expf(-0.))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(expf(INFINITY))));
EXPECT_STREQ("0", gc(xdtoaf(expf(-INFINITY))));
EXPECT_STREQ("NAN", gc(xdtoaf(expf(NAN))));
EXPECT_STREQ("0", gc(xdtoaf(expf(-132098844872390))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(expf(132098844872390))));
}
TEST(exp, fun) {
Make C memory safe like Rust This change enables Address Sanitizer systemically w/ `make MODE=dbg`. Our version of Rust's `unsafe` keyword is named `noasan` which is used for two functions that do aligned memory chunking, like `strcpy.c` and we need to fix the tiny DEFLATE code, but that's it everything else is fabulous you can have all the fischer price security blankets you need Best of all is we're now able to use the ASAN data in Blinkenlights to colorize the memory dumps. See the screenshot below of a test program: https://justine.lol/blinkenlights/asan.png Which is operating on float arrays stored on the stack, with red areas indicating poisoned memory, and the green areas indicate valid memory.
2021-02-01 11:33:13 +00:00
ASSERT_STREQ("7.389056", gc(xasprintf("%f", exp(2.0))));
ASSERT_STREQ("6.389056", gc(xasprintf("%f", expm1(2.0))));
ASSERT_STREQ("6.389056", gc(xasprintf("%f", exp(2.0) - 1.0)));
Add x86_64-linux-gnu emulator I wanted a tiny scriptable meltdown proof way to run userspace programs and visualize how program execution impacts memory. It helps to explain how things like Actually Portable Executable works. It can show you how the GCC generated code is going about manipulating matrices and more. I didn't feel fully comfortable with Qemu and Bochs because I'm not smart enough to understand them. I wanted something like gVisor but with much stronger levels of assurances. I wanted a single binary that'll run, on all major operating systems with an embedded GPL barrier ZIP filesystem that is tiny enough to transpile to JavaScript and run in browsers too. https://justine.storage.googleapis.com/emulator625.mp4
2020-08-25 11:23:25 +00:00
}
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