Last change
on this file since 403 was 337, checked in by coas-nagasima, 6 years ago |
ASP3版ECNLを追加
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File size:
694 bytes
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1 | #include <limits.h>
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2 | #include <fenv.h>
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3 | #include "libm.h"
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4 |
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5 |
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6 | #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
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7 | long long llrintl(long double x)
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8 | {
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9 | return llrint(x);
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10 | }
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11 | #elif defined(FE_INEXACT)
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12 | /*
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13 | see comments in lrint.c
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14 |
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15 | Note that if LLONG_MAX == 0x7fffffffffffffff && LDBL_MANT_DIG == 64
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16 | then x == 2**63 - 0.5 is the only input that overflows and
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17 | raises inexact (with tonearest or upward rounding mode)
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18 | */
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19 | long long llrintl(long double x)
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20 | {
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21 | #pragma STDC FENV_ACCESS ON
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22 | int e;
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23 |
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24 | e = fetestexcept(FE_INEXACT);
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25 | x = rintl(x);
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26 | if (!e && (x > LLONG_MAX || x < LLONG_MIN))
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27 | feclearexcept(FE_INEXACT);
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28 | /* conversion */
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29 | return x;
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30 | }
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31 | #else
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32 | long long llrintl(long double x)
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33 | {
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34 | return rintl(x);
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35 | }
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36 | #endif
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