/*-*- 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 │ │ │ │ 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" #include "libc/mem/gc.internal.h" #include "libc/nexgen32e/x86feature.h" #include "libc/str/str.h" #include "libc/testlib/ezbench.h" #include "libc/testlib/testlib.h" #include "libc/x/x.h" double _round(double) asm("round"); float _roundf(float) asm("roundf"); long double _roundl(long double) asm("roundl"); long _lround(double) asm("lround"); long _lroundf(float) asm("lroundf"); long _lroundl(long double) asm("lroundl"); long _lrint(double) asm("lrint"); long _lrintf(float) asm("lrintf"); long _lrintl(long double) asm("lrintl"); FIXTURE(intrin, disableHardwareExtensions) { memset((/*unconst*/ void *)kCpuids, 0, sizeof(kCpuids)); } TEST(round, testCornerCases) { EXPECT_STREQ("-0", gc(xdtoa(_round(-0.0)))); EXPECT_STREQ("NAN", gc(xdtoa(_round(NAN)))); EXPECT_STREQ("-NAN", gc(xdtoa(_round(-NAN)))); EXPECT_STREQ("INFINITY", gc(xdtoa(_round(INFINITY)))); EXPECT_STREQ("-INFINITY", gc(xdtoa(_round(-INFINITY)))); } TEST(roundl, testCornerCases) { EXPECT_STREQ("-0", gc(xdtoa(_roundl(-0.0)))); EXPECT_STREQ("NAN", gc(xdtoa(_roundl(NAN)))); EXPECT_STREQ("-NAN", gc(xdtoa(_roundl(-NAN)))); EXPECT_STREQ("INFINITY", gc(xdtoa(_roundl(INFINITY)))); EXPECT_STREQ("-INFINITY", gc(xdtoa(_roundl(-INFINITY)))); } TEST(round, test) { EXPECT_STREQ("-3", gc(xdtoa(_round(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(_round(-1.5)))); EXPECT_STREQ("-1", gc(xdtoa(_round(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(_round(-.4)))); EXPECT_STREQ("0", gc(xdtoa(_round(.4)))); EXPECT_STREQ("1", gc(xdtoa(_round(.5)))); EXPECT_STREQ("2", gc(xdtoa(_round(1.5)))); EXPECT_STREQ("3", gc(xdtoa(_round(2.5)))); } TEST(roundf, test) { EXPECT_STREQ("-3", gc(xdtoa(_roundf(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(_roundf(-1.5)))); EXPECT_STREQ("-1", gc(xdtoa(_roundf(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(_roundf(-.4)))); EXPECT_STREQ("0", gc(xdtoa(_roundf(.4)))); EXPECT_STREQ("1", gc(xdtoa(_roundf(.5)))); EXPECT_STREQ("2", gc(xdtoa(_roundf(1.5)))); EXPECT_STREQ("3", gc(xdtoa(_roundf(2.5)))); } TEST(roundl, test) { EXPECT_STREQ("-3", gc(xdtoa(_roundl(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(_roundl(-1.5)))); EXPECT_STREQ("-1", gc(xdtoa(_roundl(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(_roundl(-.4)))); EXPECT_STREQ("0", gc(xdtoa(_roundl(.4)))); EXPECT_STREQ("1", gc(xdtoa(_roundl(.5)))); EXPECT_STREQ("2", gc(xdtoa(_roundl(1.5)))); EXPECT_STREQ("3", gc(xdtoa(_roundl(2.5)))); } TEST(nearbyint, test) { EXPECT_STREQ("-2", gc(xdtoa(nearbyint(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(nearbyint(-1.5)))); EXPECT_STREQ("-0", gc(xdtoa(nearbyint(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(nearbyint(-.4)))); EXPECT_STREQ("0", gc(xdtoa(nearbyint(.4)))); EXPECT_STREQ("0", gc(xdtoa(nearbyint(.5)))); EXPECT_STREQ("2", gc(xdtoa(nearbyint(1.5)))); EXPECT_STREQ("2", gc(xdtoa(nearbyint(2.5)))); } TEST(nearbyintf, test) { EXPECT_STREQ("-2", gc(xdtoa(nearbyintf(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(nearbyintf(-1.5)))); EXPECT_STREQ("-0", gc(xdtoa(nearbyintf(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(nearbyintf(-.4)))); EXPECT_STREQ("0", gc(xdtoa(nearbyintf(.4)))); EXPECT_STREQ("0", gc(xdtoa(nearbyintf(.5)))); EXPECT_STREQ("2", gc(xdtoa(nearbyintf(1.5)))); EXPECT_STREQ("2", gc(xdtoa(nearbyintf(2.5)))); } TEST(nearbyintl, test) { EXPECT_STREQ("-2", gc(xdtoa(nearbyintl(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(nearbyintl(-1.5)))); EXPECT_STREQ("-0", gc(xdtoa(nearbyintl(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(nearbyintl(-.4)))); EXPECT_STREQ("0", gc(xdtoa(nearbyintl(.4)))); EXPECT_STREQ("0", gc(xdtoa(nearbyintl(.5)))); EXPECT_STREQ("2", gc(xdtoa(nearbyintl(1.5)))); EXPECT_STREQ("2", gc(xdtoa(nearbyintl(2.5)))); } TEST(rint, test) { EXPECT_STREQ("-2", gc(xdtoa(rint(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(rint(-1.5)))); EXPECT_STREQ("-0", gc(xdtoa(rint(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(rint(-.4)))); EXPECT_STREQ("0", gc(xdtoa(rint(.4)))); EXPECT_STREQ("0", gc(xdtoa(rint(.5)))); EXPECT_STREQ("2", gc(xdtoa(rint(1.5)))); EXPECT_STREQ("2", gc(xdtoa(rint(2.5)))); } TEST(lrint, test) { EXPECT_EQ(-2, _lrint(-2.5)); EXPECT_EQ(-2, _lrint(-1.5)); EXPECT_EQ(-0, _lrint(-.5)); EXPECT_EQ(-0, _lrint(-.4)); EXPECT_EQ(0, _lrint(.4)); EXPECT_EQ(0, _lrint(.5)); EXPECT_EQ(2, _lrint(1.5)); EXPECT_EQ(2, _lrint(2.5)); } TEST(lrintf, test) { EXPECT_EQ(-2, _lrintf(-2.5)); EXPECT_EQ(-2, _lrintf(-1.5)); EXPECT_EQ(-0, _lrintf(-.5)); EXPECT_EQ(-0, _lrintf(-.4)); EXPECT_EQ(0, _lrintf(.4)); EXPECT_EQ(0, _lrintf(.5)); EXPECT_EQ(2, _lrintf(1.5)); EXPECT_EQ(2, _lrintf(2.5)); } TEST(rintf, test) { EXPECT_STREQ("-2", gc(xdtoa(rintf(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(rintf(-1.5)))); EXPECT_STREQ("-0", gc(xdtoa(rintf(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(rintf(-.4)))); EXPECT_STREQ("0", gc(xdtoa(rintf(.4)))); EXPECT_STREQ("0", gc(xdtoa(rintf(.5)))); EXPECT_STREQ("2", gc(xdtoa(rintf(1.5)))); EXPECT_STREQ("2", gc(xdtoa(rintf(2.5)))); } TEST(rintl, test) { EXPECT_STREQ("-2", gc(xdtoa(rintl(-2.5)))); EXPECT_STREQ("-2", gc(xdtoa(rintl(-1.5)))); EXPECT_STREQ("-0", gc(xdtoa(rintl(-.5)))); EXPECT_STREQ("-0", gc(xdtoa(rintl(-.4)))); EXPECT_STREQ("0", gc(xdtoa(rintl(.4)))); EXPECT_STREQ("0", gc(xdtoa(rintl(.5)))); EXPECT_STREQ("2", gc(xdtoa(rintl(1.5)))); EXPECT_STREQ("2", gc(xdtoa(rintl(2.5)))); } TEST(roundf, testCornerCases) { EXPECT_STREQ("-0", gc(xdtoa(_roundf(-0.0)))); EXPECT_STREQ("NAN", gc(xdtoa(_roundf(NAN)))); EXPECT_STREQ("-NAN", gc(xdtoa(_roundf(-NAN)))); EXPECT_STREQ("INFINITY", gc(xdtoa(_roundf(INFINITY)))); EXPECT_STREQ("-INFINITY", gc(xdtoa(_roundf(-INFINITY)))); } TEST(lroundf, test) { EXPECT_EQ(-3, _lroundf(-2.5)); EXPECT_EQ(-2, _lroundf(-1.5)); EXPECT_EQ(-1, _lroundf(-.5)); EXPECT_EQ(0, _lroundf(-.0)); EXPECT_EQ(1, _lroundf(.5)); EXPECT_EQ(2, _lroundf(1.5)); EXPECT_EQ(3, _lroundf(2.5)); } TEST(lround, test) { EXPECT_EQ(-3, _lround(-2.5)); EXPECT_EQ(-2, _lround(-1.5)); EXPECT_EQ(-1, _lround(-.5)); EXPECT_EQ(-0, _lround(-.4)); EXPECT_EQ(0, _lround(.4)); EXPECT_EQ(1, _lround(.5)); EXPECT_EQ(2, _lround(1.5)); EXPECT_EQ(3, _lround(2.5)); } TEST(lroundl, test) { EXPECT_EQ(-3, _lroundl(-2.5)); EXPECT_EQ(-2, _lroundl(-1.5)); EXPECT_EQ(-1, _lroundl(-.5)); EXPECT_EQ(-0, _lroundl(-.4)); EXPECT_EQ(0, _lroundl(.4)); EXPECT_EQ(1, _lroundl(.5)); EXPECT_EQ(2, _lroundl(1.5)); EXPECT_EQ(3, _lroundl(2.5)); } BENCH(round, bench) { EZBENCH2("double+.5", donothing, EXPROPRIATE(VEIL("x", (double)(-3.5)) + .5)); EZBENCH2("float+.5f", donothing, EXPROPRIATE(VEIL("x", (float)(-3.5)) + .5)); EZBENCH2("ldbl+.5l", donothing, EXPROPRIATE(VEIL("t", (long double)(-3.5)) + .5)); EZBENCH2("round", donothing, _round(.7)); /* ~4ns */ EZBENCH2("roundf", donothing, _roundf(.7)); /* ~3ns */ EZBENCH2("roundl", donothing, _roundl(.7)); /* ~8ns */ EZBENCH2("lrint", donothing, _lrint(.7)); /* ~1ns */ EZBENCH2("lrintf", donothing, _lrintf(.7)); /* ~1ns */ EZBENCH2("lrintl", donothing, _lrintl(.7)); /* ~78ns */ }