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cosmopolitan/test/libc/tinymath/ldexp_test.c

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Fix bugs and have emulator emulate itself
2020-08-31 12:17:31 +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│
Initial import
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╞══════════════════════════════════════════════════════════════════════════════╡
│ 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
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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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╚─────────────────────────────────────────────────────────────────────────────*/
#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.
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#include "libc/mem/gc.h"
Fold LIBC_RAND into LIBC_STDIO/TINYMATH/INTRIN
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#include "libc/stdio/rand.h"
Fix bugs and have emulator emulate itself
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#include "libc/stdio/stdio.h"
Import more Musl math
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#include "libc/testlib/ezbench.h"
Fix bugs and have emulator emulate itself
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#include "libc/testlib/testlib.h"
#include "libc/x/x.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
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
int rando;
void SetUp(void) {
rando = rand() & 0xffff;
}
TEST(ldexpl, test) {
EXPECT_EQ(rando, ldexpl(rando, 0));
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("NAN", _gc(xdtoal(ldexpl(NAN, 0))));
EXPECT_STREQ("-NAN", _gc(xdtoal(ldexpl(-NAN, 0))));
EXPECT_STREQ("INFINITY", _gc(xdtoal(ldexpl(INFINITY, 0))));
EXPECT_STREQ("-INFINITY", _gc(xdtoal(ldexpl(-INFINITY, 0))));
EXPECT_STREQ("NAN", _gc(xdtoal(ldexpl(NAN, 1))));
EXPECT_STREQ("-NAN", _gc(xdtoal(ldexpl(-NAN, 1))));
EXPECT_STREQ("INFINITY", _gc(xdtoal(ldexpl(INFINITY, 1))));
EXPECT_STREQ("-INFINITY", _gc(xdtoal(ldexpl(-INFINITY, 1))));
EXPECT_STREQ("16384", _gc(xdtoal(log2l(LDBL_MAX))));
EXPECT_STREQ(".00390625", _gc(xdtoal(ldexpl(1, -8))));
EXPECT_STREQ("0", _gc(xdtoal(ldexpl(0, -8))));
EXPECT_STREQ("0", _gc(xdtoal(ldexpl(0, 8))));
EXPECT_STREQ("256", _gc(xdtoal(ldexpl(1, 8))));
EXPECT_STREQ("512", _gc(xdtoal(ldexpl(2, 8))));
EXPECT_STREQ("768", _gc(xdtoal(ldexpl(3, 8))));
EXPECT_STREQ("6.997616471358197e+3461", _gc(xdtoal(ldexpl(1, 11500))));
EXPECT_STREQ("INFINITY", _gc(xdtoal(ldexpl(1, 999999))));
EXPECT_STREQ("0", _gc(xdtoal(ldexpl(1, -999999))));
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
}
Fix bugs and have emulator emulate itself
2020-08-31 12:17:31 +00:00
TEST(ldexp, 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_EQ(rando, ldexp(rando, 0));
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("NAN", _gc(xdtoa(ldexp(NAN, 0))));
EXPECT_STREQ("-NAN", _gc(xdtoa(ldexp(-NAN, 0))));
EXPECT_STREQ("INFINITY", _gc(xdtoa(ldexp(INFINITY, 0))));
EXPECT_STREQ("-INFINITY", _gc(xdtoa(ldexp(-INFINITY, 0))));
EXPECT_STREQ("NAN", _gc(xdtoa(ldexp(NAN, 1))));
EXPECT_STREQ("-NAN", _gc(xdtoa(ldexp(-NAN, 1))));
EXPECT_STREQ("INFINITY", _gc(xdtoa(ldexp(INFINITY, 1))));
EXPECT_STREQ("-INFINITY", _gc(xdtoa(ldexp(-INFINITY, 1))));
EXPECT_STREQ("16384", _gc(xdtoa(log2l(LDBL_MAX))));
EXPECT_STREQ(".00390625", _gc(xdtoa(ldexp(1, -8))));
EXPECT_STREQ("0", _gc(xdtoa(ldexp(0, -8))));
EXPECT_STREQ("0", _gc(xdtoa(ldexp(0, 8))));
EXPECT_STREQ("256", _gc(xdtoa(ldexp(1, 8))));
EXPECT_STREQ("512", _gc(xdtoa(ldexp(2, 8))));
EXPECT_STREQ("768", _gc(xdtoa(ldexp(3, 8))));
EXPECT_STREQ("INFINITY", _gc(xdtoa(ldexp(1, 999999))));
EXPECT_STREQ("0", _gc(xdtoa(ldexp(1, -999999))));
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
}
TEST(ldexpf, test) {
EXPECT_EQ(rando, ldexpf(rando, 0));
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("NAN", _gc(xdtoaf(ldexpf(NAN, 0))));
EXPECT_STREQ("-NAN", _gc(xdtoaf(ldexpf(-NAN, 0))));
EXPECT_STREQ("INFINITY", _gc(xdtoaf(ldexpf(INFINITY, 0))));
EXPECT_STREQ("-INFINITY", _gc(xdtoaf(ldexpf(-INFINITY, 0))));
EXPECT_STREQ("NAN", _gc(xdtoaf(ldexpf(NAN, 1))));
EXPECT_STREQ("-NAN", _gc(xdtoaf(ldexpf(-NAN, 1))));
EXPECT_STREQ("INFINITY", _gc(xdtoaf(ldexpf(INFINITY, 1))));
EXPECT_STREQ("-INFINITY", _gc(xdtoaf(ldexpf(-INFINITY, 1))));
EXPECT_STREQ("16384", _gc(xdtoaf(log2l(LDBL_MAX))));
EXPECT_STREQ(".00390625", _gc(xdtoaf(ldexpf(1, -8))));
EXPECT_STREQ("0", _gc(xdtoaf(ldexpf(0, -8))));
EXPECT_STREQ("0", _gc(xdtoaf(ldexpf(0, 8))));
EXPECT_STREQ("256", _gc(xdtoaf(ldexpf(1, 8))));
EXPECT_STREQ("512", _gc(xdtoaf(ldexpf(2, 8))));
EXPECT_STREQ("768", _gc(xdtoaf(ldexpf(3, 8))));
EXPECT_STREQ("INFINITY", _gc(xdtoaf(ldexpf(1, 999999))));
EXPECT_STREQ("0", _gc(xdtoaf(ldexpf(1, -999999))));
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
}
TEST(ldexp, stuff) {
Fix bugs and have emulator emulate itself
2020-08-31 12:17:31 +00:00
volatile int twopow = 5;
volatile double pi = 3.14;
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
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", ldexp(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", ldexpf(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2Lf", ldexpl(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", scalb(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", scalbf(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", scalbn(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", scalbnf(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2Lf", scalbnl(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", scalbln(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2f", scalblnf(pi, twopow))));
ASSERT_STREQ("100.48", _gc(xasprintf("%.2Lf", scalblnl(pi, twopow))));
Fix bugs and have emulator emulate itself
2020-08-31 12:17:31 +00:00
}
Make improvements - Emulator can now test the αcτµαlly pδrταblε εxεcµταblε bootloader - Whipped up a webserver named redbean. It services 150k requests per second on a single core. Bundling assets inside zip enables extremely fast serving for two reasons. The first is that zip central directory lookups go faster than stat() system calls. The second is that both zip and gzip content-encoding use DEFLATE, therefore, compressed responses can be served via the sendfile() system call which does an in-kernel copy directly from the zip executable structure. Also note that red bean zip executables can be deployed easily to all platforms, since these native executables work on Linux, Mac, BSD, and Windows. - Address sanitizer now works very well
2020-09-07 04:39:00 +00:00
Import more Musl math
2022-07-12 22:49:11 +00:00
BENCH(ldexpl, bench) {
double _ldexp(double, int) asm("ldexp");
float _ldexpf(float, int) asm("ldexpf");
long double _ldexpl(long double, int) asm("ldexpl");
EZBENCH2("ldexp", donothing, _ldexp(.7, 3)); /* ~1ns */
EZBENCH2("ldexpf", donothing, _ldexpf(.7, 3)); /* ~1ns */
EZBENCH2("ldexpl", donothing, _ldexpl(.7, 3)); /* ~7ns */
Make improvements - Emulator can now test the αcτµαlly pδrταblε εxεcµταblε bootloader - Whipped up a webserver named redbean. It services 150k requests per second on a single core. Bundling assets inside zip enables extremely fast serving for two reasons. The first is that zip central directory lookups go faster than stat() system calls. The second is that both zip and gzip content-encoding use DEFLATE, therefore, compressed responses can be served via the sendfile() system call which does an in-kernel copy directly from the zip executable structure. Also note that red bean zip executables can be deployed easily to all platforms, since these native executables work on Linux, Mac, BSD, and Windows. - Address sanitizer now works very well
2020-09-07 04:39:00 +00:00
}
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