source: azure_iot_hub/trunk/musl-1.1.18/src/math/frexpl.c@ 388

Last change on this file since 388 was 388, checked in by coas-nagasima, 5 years ago

Azure IoT Hub Device C SDK を使ったサンプルの追加
  • Property svn:eol-style set to native
  • Property svn:keywords set to Id
  • Property svn:mime-type set to text/x-csrc
File size: 525 bytes
Line 
1#include "libm.h"
2
3#if LDBL_MANT_DIG == 53 && LDBL_MAX_EXP == 1024
4long double frexpl(long double x, int *e)
5{
6 return frexp(x, e);
7}
8#elif (LDBL_MANT_DIG == 64 || LDBL_MANT_DIG == 113) && LDBL_MAX_EXP == 16384
9long double frexpl(long double x, int *e)
10{
11 union ldshape u = {x};
12 int ee = u.i.se & 0x7fff;
13
14 if (!ee) {
15 if (x) {
16 x = frexpl(x*0x1p120, e);
17 *e -= 120;
18 } else *e = 0;
19 return x;
20 } else if (ee == 0x7fff) {
21 return x;
22 }
23
24 *e = ee - 0x3ffe;
25 u.i.se &= 0x8000;
26 u.i.se |= 0x3ffe;
27 return u.f;
28}
29#endif
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