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cosmopolitan/test/libc/tinymath/tan_test.c

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Make pow() conform to standard definition
2021-03-03 17:05:21 +00:00
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
Fix vi modelines (#989) At least in neovim, `│vi:` is not recognized as a modeline because it has no preceding whitespace. After fixing this, opening a file yields an error because `net` is not an option. (`noet`, however, is.)
2023-12-05 22:37:54 +00:00
│ vi: set noet ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
Initial import
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╞══════════════════════════════════════════════════════════════════════════════╡
Make pow() conform to standard definition
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
Initial import
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│ │
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
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│ 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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╚─────────────────────────────────────────────────────────────────────────────*/
Make pow() conform to standard definition
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#include "libc/math.h"
Pay off more technical debt This makes breaking changes to add underscores to many non-standard function names provided by the c library. MODE=tiny is now tinier and we now use smaller locks that are better for tiny apps in this mode. Some headers have been renamed to be in the same folder as the build package, so it'll be easier to know which build dependency is needed. Certain old misguided interfaces have been removed. Intel intrinsics headers are now listed in libc/isystem (but not in the amalgamation) to help further improve open source compatibility. Header complexity has also been reduced. Lastly, more shell scripts are now available.
2022-09-13 06:10:38 +00:00
#include "libc/mem/gc.h"
Import more Musl math
2022-07-12 22:49:11 +00:00
#include "libc/testlib/ezbench.h"
Add more math fixes
2021-03-06 19:41:01 +00:00
#include "libc/testlib/testlib.h"
Pay off more technical debt This makes breaking changes to add underscores to many non-standard function names provided by the c library. MODE=tiny is now tinier and we now use smaller locks that are better for tiny apps in this mode. Some headers have been renamed to be in the same folder as the build package, so it'll be easier to know which build dependency is needed. Certain old misguided interfaces have been removed. Intel intrinsics headers are now listed in libc/isystem (but not in the amalgamation) to help further improve open source compatibility. Header complexity has also been reduced. Lastly, more shell scripts are now available.
2022-09-13 06:10:38 +00:00
#include "libc/x/xasprintf.h"
Initial import
2020-06-15 14:18:57 +00:00
Port a lot more code to AARCH64 - Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
2023-05-14 16:32:15 +00:00
double _tan(double) asm("tan");
float _tanf(float) asm("tanf");
long double _tanl(long double) asm("tanl");
Add more math fixes
2021-03-06 19:41:01 +00:00
TEST(tan, test) {
Port a lot more code to AARCH64 - Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
2023-05-14 16:32:15 +00:00
EXPECT_STREQ("0", _gc(xasprintf("%.15g", _tan(0.))));
EXPECT_STREQ("-0", _gc(xasprintf("%.15g", _tan(-0.))));
EXPECT_STREQ("0.54630248984379", _gc(xasprintf("%.15g", _tan(.5))));
EXPECT_STREQ("-0.54630248984379", _gc(xasprintf("%.15g", _tan(-.5))));
EXPECT_STREQ("1.5574077246549", _gc(xasprintf("%.15g", _tan(1.))));
EXPECT_STREQ("-1.5574077246549", _gc(xasprintf("%.15g", _tan(-1.))));
EXPECT_STREQ("14.1014199471717", _gc(xasprintf("%.15g", _tan(1.5))));
EXPECT_STREQ("-14.1014199471717", _gc(xasprintf("%.15g", _tan(-1.5))));
EXPECT_STREQ("nan", _gc(xasprintf("%.15g", _tan(NAN))));
EXPECT_STREQ("-nan", _gc(xasprintf("%.15g", _tan(-NAN))));
EXPECT_TRUE(isnan(_tan(INFINITY)));
EXPECT_TRUE(isnan(_tan(-INFINITY)));
Add more math fixes
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EXPECT_STREQ("2.2250738585072e-308",
Port a lot more code to AARCH64 - Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
2023-05-14 16:32:15 +00:00
_gc(xasprintf("%.15g", _tan(__DBL_MIN__))));
Pay off more technical debt This makes breaking changes to add underscores to many non-standard function names provided by the c library. MODE=tiny is now tinier and we now use smaller locks that are better for tiny apps in this mode. Some headers have been renamed to be in the same folder as the build package, so it'll be easier to know which build dependency is needed. Certain old misguided interfaces have been removed. Intel intrinsics headers are now listed in libc/isystem (but not in the amalgamation) to help further improve open source compatibility. Header complexity has also been reduced. Lastly, more shell scripts are now available.
2022-09-13 06:10:38 +00:00
EXPECT_STREQ("-0.0049620158744449",
Port a lot more code to AARCH64 - Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
2023-05-14 16:32:15 +00:00
_gc(xasprintf("%.15g", _tan(__DBL_MAX__))));
Make pow() conform to standard definition
2021-03-03 17:05:21 +00:00
}
Import more Musl math
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BENCH(tan, bench) {
Port a lot more code to AARCH64 - Introduce epoll_pwait() - Rewrite -ftrapv and ffs() libraries in C code - Use more FreeBSD code in math function library - Get significantly more tests passing on qemu-aarch64 - Fix many Musl long double functions that were broken on AARCH64
2023-05-14 16:32:15 +00:00
EZBENCH2("tan", donothing, _tan(.7)); // ~18ns
EZBENCH2("tanf", donothing, _tanf(.7)); // ~6ns
EZBENCH2("tanl", donothing, _tanl(.7)); // ~39ns
Import more Musl math
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}
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