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cosmopolitan/test/libc/tinymath/hypot_test.c

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Implement better hypot function
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
flip et / noet in modelines `et` means `expandtab`. ```sh rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\) :vi/vi: \1 xoet\2:vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2 :vi/' rg 'vi: .* :vi' -l -0 | \ xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/' ```
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2021 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/math.h"
Bring back gc() function Renaming gc() to _gc() was a mistake since the better thing to do is put it behind the _COSMO_SOURCE macro. We need this change because I haven't wanted to use my amazing garbage collector ever since we renamed it. You now need to define _COSMO_SOURCE yourself when using amalgamation header and cosmocc users need to pass the -mcosmo flag to get the gc() function Some other issues relating to cancelation have been fixed along the way. We're also now putting cosmocc in a folder named `.cosmocc` so it can be more safely excluded by grep --exclude-dir=.cosmocc --exclude-dir=o etc.
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#include "libc/mem/gc.h"
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#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"
Get LIBC_TESTLIB building on AARCH64
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double _hypot(double, double) asm("hypot");
float _hypotf(float, float) asm("hypotf");
long double _hypotl(long double, long double) asm("hypotl");
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
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Implement better hypot function
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TEST(hypot, test) {
Get LIBC_TESTLIB building on AARCH64
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EXPECT_STREQ("0", gc(xdtoa(_hypot(0, 0))));
EXPECT_STREQ("3", gc(xdtoa(_hypot(3, 0))));
EXPECT_STREQ("3", gc(xdtoa(_hypot(0, 3))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(3, 4))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(4, 3))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(3, -4))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(-4, 3))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(-3, 4))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(4, -3))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(-3, -4))));
EXPECT_STREQ("5", gc(xdtoa(_hypot(-4, -3))));
EXPECT_STREQ("1.4142135623731", gc(xdtoa(_hypot(1, 1))));
EXPECT_STREQ("1.4142135623731", gc(xdtoa(_hypot(1, -1))));
EXPECT_STREQ("1.4142135623731", gc(xdtoa(_hypot(-1, 1))));
EXPECT_STREQ("1.41421362601271", gc(xdtoa(_hypot(1.0000001, .99999999))));
EXPECT_STREQ("1.41421362601271", gc(xdtoa(_hypot(.99999999, 1.0000001))));
EXPECT_STREQ("1.4142135623731e+154", gc(xdtoa(_hypot(1e154, 1e154))));
EXPECT_STREQ("NAN", gc(xdtoa(_hypot(0, NAN))));
EXPECT_STREQ("NAN", gc(xdtoa(_hypot(NAN, 0))));
EXPECT_STREQ("NAN", gc(xdtoa(_hypot(NAN, NAN))));
EXPECT_STREQ("INFINITY", gc(xdtoa(_hypot(INFINITY, 0))));
EXPECT_STREQ("INFINITY", gc(xdtoa(_hypot(0, INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoa(_hypot(INFINITY, NAN))));
EXPECT_STREQ("INFINITY", gc(xdtoa(_hypot(NAN, INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoa(_hypot(INFINITY, INFINITY))));
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}
TEST(hypotf, test) {
Get LIBC_TESTLIB building on AARCH64
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EXPECT_STREQ("0", gc(xdtoa(_hypotf(0, 0))));
EXPECT_STREQ("3", gc(xdtoa(_hypotf(3, 0))));
EXPECT_STREQ("3", gc(xdtoa(_hypotf(0, 3))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(3, 4))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(4, 3))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(3, -4))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(-4, 3))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(-3, 4))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(4, -3))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(-3, -4))));
EXPECT_STREQ("5", gc(xdtoa(_hypotf(-4, -3))));
EXPECT_STREQ("1.41421", gc(xdtoaf(_hypotf(1, 1))));
EXPECT_STREQ("1.41421", gc(xdtoaf(_hypotf(1, -1))));
EXPECT_STREQ("1.41421", gc(xdtoaf(_hypotf(-1, 1))));
EXPECT_STREQ("1.41421", gc(xdtoaf(_hypotf(1.000001, 0.999999))));
EXPECT_STREQ("1.41421", gc(xdtoaf(_hypotf(0.999999, 1.000001))));
EXPECT_STREQ("1.41421e+38", gc(xdtoaf(_hypotf(1e38, 1e38))));
EXPECT_STREQ("NAN", gc(xdtoaf(_hypotf(0, NAN))));
EXPECT_STREQ("NAN", gc(xdtoaf(_hypotf(NAN, 0))));
EXPECT_STREQ("NAN", gc(xdtoaf(_hypotf(NAN, NAN))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(_hypotf(INFINITY, 0))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(_hypotf(0, INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(_hypotf(INFINITY, NAN))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(_hypotf(NAN, INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoaf(_hypotf(INFINITY, INFINITY))));
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}
Further refine hypot implementation Thanks go to Fabian Giesen on Twitter for code review and advice.
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TEST(hypotll, test) {
Get LIBC_TESTLIB building on AARCH64
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EXPECT_STREQ("0", gc(xdtoal(_hypotl(0, 0))));
EXPECT_STREQ("3", gc(xdtoal(_hypotl(3, 0))));
EXPECT_STREQ("3", gc(xdtoal(_hypotl(0, 3))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(3, 4))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(4, 3))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(3, -4))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(-4, 3))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(-3, 4))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(4, -3))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(-3, -4))));
EXPECT_STREQ("5", gc(xdtoal(_hypotl(-4, -3))));
EXPECT_STREQ("1.414213562373095", gc(xdtoal(_hypotl(1, 1))));
EXPECT_STREQ("1.414213562373095", gc(xdtoal(_hypotl(1, -1))));
EXPECT_STREQ("1.414213562373095", gc(xdtoal(_hypotl(-1, 1))));
EXPECT_STREQ("1.414213626012708", gc(xdtoal(_hypotl(1.0000001, .99999999))));
EXPECT_STREQ("1.414213626012708", gc(xdtoal(_hypotl(.99999999, 1.0000001))));
EXPECT_STREQ("1.414213562373095e+4931",
gc(xdtoal(_hypotl(1e4931L, 1e4931L))));
EXPECT_STREQ("NAN", gc(xdtoal(_hypotl(0, NAN))));
EXPECT_STREQ("NAN", gc(xdtoal(_hypotl(NAN, 0))));
EXPECT_STREQ("NAN", gc(xdtoal(_hypotl(NAN, NAN))));
EXPECT_STREQ("INFINITY", gc(xdtoal(_hypotl(INFINITY, 0))));
EXPECT_STREQ("INFINITY", gc(xdtoal(_hypotl(0, INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoal(_hypotl(INFINITY, NAN))));
EXPECT_STREQ("INFINITY", gc(xdtoal(_hypotl(NAN, INFINITY))));
EXPECT_STREQ("INFINITY", gc(xdtoal(_hypotl(INFINITY, INFINITY))));
Implement better hypot function
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}
Get more Python tests passing (#141)
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/*
Get LIBC_TESTLIB building on AARCH64
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_hypot (musl) l: 53𝑐 17𝑛𝑠 m: 85𝑐 27𝑛𝑠
_hypot l: 39𝑐 13𝑛𝑠 m: 66𝑐 21𝑛𝑠
_hypotf l: 25𝑐 8𝑛𝑠 m: 55𝑐 18𝑛𝑠
_hypotl l: 43𝑐 14𝑛𝑠 m: 74𝑐 24𝑛𝑠
Get more Python tests passing (#141)
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*/
Get LIBC_TESTLIB building on AARCH64
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BENCH(_hypot, bench) {
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volatile double a = 2;
volatile double b = 3;
Mint APE Loader v1.5 This change ports APE Loader to Linux AARCH64, so that Raspberry Pi users can run programs like redbean, without the executable needing to modify itself. Progress has also slipped into this change on the issue of making progress better conforming to user expectations and industry standards regarding which symbols we're allowed to declare
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EZBENCH2("hypotf", donothing, __expropriate(_hypotf(a, b)));
EZBENCH2("hypot", donothing, __expropriate(_hypot(a, b)));
EZBENCH2("hypotl", donothing, __expropriate(_hypotl(a, b)));
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}
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