40 lines
2.4 KiB
C
40 lines
2.4 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ This program is free software; you can redistribute it and/or modify │
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│ it under the terms of the GNU General Public License as published by │
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│ the Free Software Foundation; version 2 of the License. │
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│ │
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│ This program is distributed in the hope that it will be useful, but │
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│ WITHOUT ANY WARRANTY; without even the implied warranty of │
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│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
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│ General Public License for more details. │
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│ │
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│ You should have received a copy of the GNU General Public License │
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│ along with this program; if not, write to the Free Software │
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│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
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│ 02110-1301 USA │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/testlib/testlib.h"
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#include "tool/build/lib/x87.h"
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TEST(x87, fprem) {
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ASSERT_LDBL_EQ(1, fprem(1, -1.5, NULL));
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ASSERT_LDBL_EQ(1.1766221079117338e-14L,
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fprem(12300000000000000.L, .0000000000000123L, NULL));
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}
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TEST(x87, fprem1) {
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ASSERT_LDBL_EQ(-.5, fprem1(1, -1.5, NULL));
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ASSERT_LDBL_EQ(-5.337789208826618e-16,
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fprem1(12300000000000000.L, .0000000000000123L, NULL));
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}
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TEST(x87, fpremFlags) {
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uint32_t sw = 0xffff;
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ASSERT_LDBL_EQ(1, fprem(1, -1.5, &sw));
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ASSERT_EQ(0b1011100011111111, sw);
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}
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