Last change
on this file since 398 was 398, checked in by coas-nagasima, 5 years ago |
mbedTLS版Azure IoT Hub接続サンプルのソースコードを追加
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Property svn:eol-style
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File size:
669 bytes
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Rev | Line | |
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[398] | 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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