/*-*- 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 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"
#include "libc/rand/rand.h"
#include "libc/runtime/gc.internal.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
#include "libc/x/x.h"

double asin_(double) asm("asin");
#define asin asin_

TEST(asin, test) {
  EXPECT_STREQ("0", gc(xasprintf("%.15g", asin(0.))));
  EXPECT_STREQ("-0", gc(xasprintf("%.15g", asin(-0.))));
  EXPECT_STREQ("0.523598775598299", gc(xasprintf("%.15g", asin(.5))));
  EXPECT_STREQ("-0.523598775598299", gc(xasprintf("%.15g", asin(-.5))));
  EXPECT_STREQ("1.5707963267949", gc(xasprintf("%.15g", asin(1.))));
  EXPECT_STREQ("-1.5707963267949", gc(xasprintf("%.15g", asin(-1.))));
  EXPECT_TRUE(isnan(asin(1.5)));
  EXPECT_TRUE(isnan(asin(-1.5)));
  EXPECT_TRUE(isnan(asin(NAN)));
  EXPECT_TRUE(isnan(asin(-NAN)));
  EXPECT_TRUE(isnan(asin(INFINITY)));
  EXPECT_TRUE(isnan(asin(-INFINITY)));
  EXPECT_STREQ("2.2250738585072e-308",
               gc(xasprintf("%.15g", asin(__DBL_MIN__))));
  EXPECT_TRUE(isnan(asin(__DBL_MAX__)));
}

BENCH(asin, bench) {
  EZBENCH2("asin(+0)", donothing, asin(0));
  EZBENCH2("asin(-0)", donothing, asin(-0.));
  EZBENCH2("asin(NAN)", donothing, asin(NAN));
  EZBENCH2("asin(INFINITY)", donothing, asin(INFINITY));
  EZBENCH_C("asin", _real1(vigna()), asin(_real1(vigna())));
}