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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Property svn:eol-style
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native
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Property svn:mime-type
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text/x-csrc;charset=UTF-8
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File size:
669 bytes
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1 | #include "libm.h"
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2 |
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3 | #if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
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4 | long double scalbnl(long double x, int n)
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5 | {
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6 | return scalbn(x, n);
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7 | }
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8 | #elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
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9 | long double scalbnl(long double x, int n)
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10 | {
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11 | union ldshape u;
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12 |
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13 | if (n > 16383) {
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14 | x *= 0x1p16383L;
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15 | n -= 16383;
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16 | if (n > 16383) {
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17 | x *= 0x1p16383L;
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18 | n -= 16383;
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19 | if (n > 16383)
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20 | n = 16383;
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21 | }
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22 | } else if (n < -16382) {
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23 | x *= 0x1p-16382L * 0x1p113L;
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24 | n += 16382 - 113;
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25 | if (n < -16382) {
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26 | x *= 0x1p-16382L * 0x1p113L;
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27 | n += 16382 - 113;
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28 | if (n < -16382)
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29 | n = -16382;
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30 | }
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31 | }
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32 | u.f = 1.0;
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33 | u.i.se = 0x3fff + n;
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34 | return x * u.f;
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35 | }
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36 | #endif
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