/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-â
âvi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :viâ
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â Copyright 2021 Justine Alexandra Roberts Tunney                              â
â                                                                              â
â Permission to use, copy, modify, and/or distribute this software for         â
â any purpose with or without fee is hereby granted, provided that the         â
â above copyright notice and this permission notice appear in all copies.      â
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â THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                â
â WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                â
â WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             â
â AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         â
â DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        â
â PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               â
â TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             â
â PERFORMANCE OF THIS SOFTWARE.                                                â
ââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââââ*/
#include "libc/math.h"
#include "libc/mem/gc.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/testlib.h"
#include "libc/x/xasprintf.h"

double _tan(double) asm("tan");
float _tanf(float) asm("tanf");
long double _tanl(long double) asm("tanl");

TEST(tan, test) {
  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)));
  EXPECT_STREQ("2.2250738585072e-308",
               _gc(xasprintf("%.15g", _tan(__DBL_MIN__))));
  EXPECT_STREQ("-0.0049620158744449",
               _gc(xasprintf("%.15g", _tan(__DBL_MAX__))));
}

BENCH(tan, bench) {
  EZBENCH2("tan", donothing, _tan(.7));    // ~18ns
  EZBENCH2("tanf", donothing, _tanf(.7));  //  ~6ns
  EZBENCH2("tanl", donothing, _tanl(.7));  // ~39ns
}
