/*-*- 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                              │
│                                                                              │
│ This program is free software; you can redistribute it and/or modify         │
│ it under the terms of the GNU General Public License as published by         │
│ the Free Software Foundation; version 2 of the License.                      │
│                                                                              │
│ This program is distributed in the hope that it will be useful, but          │
│ WITHOUT ANY WARRANTY; without even the implied warranty of                   │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU             │
│ General Public License for more details.                                     │
│                                                                              │
│ You should have received a copy of the GNU General Public License            │
│ along with this program; if not, write to the Free Software                  │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA                │
│ 02110-1301 USA                                                               │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/math.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/runtime/gc.h"
#include "libc/str/str.h"
#include "libc/testlib/testlib.h"
#include "libc/tinymath/tinymath.h"
#include "libc/x/x.h"

float tinymath_roundf$k8(float);
double tinymath_round$k8(double);

FIXTURE(intrin, disableHardwareExtensions) {
  memset((/*unconst*/ void *)kCpuids, 0, sizeof(kCpuids));
}

TEST(round, testCornerCases) {
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_round(-0.0))));
  EXPECT_STREQ("nan", gc(xdtoa(tinymath_round(NAN))));
  EXPECT_STREQ("-nan", gc(xdtoa(tinymath_round(-NAN))));
  EXPECT_STREQ("inf", gc(xdtoa(tinymath_round(INFINITY))));
  EXPECT_STREQ("-inf", gc(xdtoa(tinymath_round(-INFINITY))));
}

TEST(roundl, testCornerCases) {
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_roundl(-0.0))));
  EXPECT_STREQ("nan", gc(xdtoa(tinymath_roundl(NAN))));
  EXPECT_STREQ("-nan", gc(xdtoa(tinymath_roundl(-NAN))));
  EXPECT_STREQ("inf", gc(xdtoa(tinymath_roundl(INFINITY))));
  EXPECT_STREQ("-inf", gc(xdtoa(tinymath_roundl(-INFINITY))));
}

TEST(round, test) {
  EXPECT_STREQ("-3", gc(xdtoa(tinymath_round(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_round(-1.5))));
  EXPECT_STREQ("-1", gc(xdtoa(tinymath_round(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_round(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_round(.4))));
  EXPECT_STREQ("1", gc(xdtoa(tinymath_round(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_round(1.5))));
  EXPECT_STREQ("3", gc(xdtoa(tinymath_round(2.5))));
}

TEST(roundf, test) {
  EXPECT_STREQ("-3", gc(xdtoa(tinymath_roundf(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_roundf(-1.5))));
  EXPECT_STREQ("-1", gc(xdtoa(tinymath_roundf(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_roundf(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_roundf(.4))));
  EXPECT_STREQ("1", gc(xdtoa(tinymath_roundf(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_roundf(1.5))));
  EXPECT_STREQ("3", gc(xdtoa(tinymath_roundf(2.5))));
}

TEST(roundl, test) {
  EXPECT_STREQ("-3", gc(xdtoa(tinymath_roundl(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_roundl(-1.5))));
  EXPECT_STREQ("-1", gc(xdtoa(tinymath_roundl(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_roundl(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_roundl(.4))));
  EXPECT_STREQ("1", gc(xdtoa(tinymath_roundl(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_roundl(1.5))));
  EXPECT_STREQ("3", gc(xdtoa(tinymath_roundl(2.5))));
}

TEST(nearbyint, test) {
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_nearbyint(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_nearbyint(-1.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_nearbyint(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_nearbyint(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_nearbyint(.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_nearbyint(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_nearbyint(1.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_nearbyint(2.5))));
}

TEST(nearbyintf, test) {
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_nearbyintf(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_nearbyintf(-1.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_nearbyintf(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_nearbyintf(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_nearbyintf(.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_nearbyintf(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_nearbyintf(1.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_nearbyintf(2.5))));
}

TEST(nearbyintl, test) {
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_nearbyintl(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_nearbyintl(-1.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_nearbyintl(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_nearbyintl(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_nearbyintl(.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_nearbyintl(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_nearbyintl(1.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_nearbyintl(2.5))));
}

TEST(rint, test) {
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_rint(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_rint(-1.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_rint(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_rint(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_rint(.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_rint(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_rint(1.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_rint(2.5))));
}

TEST(rintf, test) {
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_rintf(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_rintf(-1.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_rintf(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_rintf(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_rintf(.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_rintf(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_rintf(1.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_rintf(2.5))));
}

TEST(rintl, test) {
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_rintl(-2.5))));
  EXPECT_STREQ("-2", gc(xdtoa(tinymath_rintl(-1.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_rintl(-.5))));
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_rintl(-.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_rintl(.4))));
  EXPECT_STREQ("0", gc(xdtoa(tinymath_rintl(.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_rintl(1.5))));
  EXPECT_STREQ("2", gc(xdtoa(tinymath_rintl(2.5))));
}

TEST(roundf, testCornerCases) {
  EXPECT_STREQ("-0", gc(xdtoa(tinymath_roundf(-0.0))));
  EXPECT_STREQ("nan", gc(xdtoa(tinymath_roundf(NAN))));
  EXPECT_STREQ("-nan", gc(xdtoa(tinymath_roundf(-NAN))));
  EXPECT_STREQ("inf", gc(xdtoa(tinymath_roundf(INFINITY))));
  EXPECT_STREQ("-inf", gc(xdtoa(tinymath_roundf(-INFINITY))));
}

TEST(lroundf, test) {
  EXPECT_EQ(-3, tinymath_lroundf(-2.5));
  EXPECT_EQ(-2, tinymath_lroundf(-1.5));
  EXPECT_EQ(-1, tinymath_lroundf(-.5));
  EXPECT_EQ(0, tinymath_lroundf(-.0));
  EXPECT_EQ(1, tinymath_lroundf(.5));
  EXPECT_EQ(2, tinymath_lroundf(1.5));
  EXPECT_EQ(3, tinymath_lroundf(2.5));
}

TEST(lround, test) {
  EXPECT_EQ(-3, tinymath_lround(-2.5));
  EXPECT_EQ(-2, tinymath_lround(-1.5));
  EXPECT_EQ(-1, tinymath_lround(-.5));
  EXPECT_EQ(-0, tinymath_lround(-.4));
  EXPECT_EQ(0, tinymath_lround(.4));
  EXPECT_EQ(1, tinymath_lround(.5));
  EXPECT_EQ(2, tinymath_lround(1.5));
  EXPECT_EQ(3, tinymath_lround(2.5));
}

TEST(lroundl, test) {
  EXPECT_EQ(-3, tinymath_lroundl(-2.5));
  EXPECT_EQ(-2, tinymath_lroundl(-1.5));
  EXPECT_EQ(-1, tinymath_lroundl(-.5));
  EXPECT_EQ(-0, tinymath_lroundl(-.4));
  EXPECT_EQ(0, tinymath_lroundl(.4));
  EXPECT_EQ(1, tinymath_lroundl(.5));
  EXPECT_EQ(2, tinymath_lroundl(1.5));
  EXPECT_EQ(3, tinymath_lroundl(2.5));
}