Rev 4921 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4349 | Serge | 1 | /* |
| 2 | (C) Copyright IBM Corp. 2009 |
||
| 3 | |||
| 4 | All rights reserved. |
||
| 5 | |||
| 6 | Redistribution and use in source and binary forms, with or without |
||
| 7 | modification, are permitted provided that the following conditions are met: |
||
| 8 | |||
| 9 | * Redistributions of source code must retain the above copyright notice, |
||
| 10 | this list of conditions and the following disclaimer. |
||
| 11 | * Redistributions in binary form must reproduce the above copyright |
||
| 12 | notice, this list of conditions and the following disclaimer in the |
||
| 13 | documentation and/or other materials provided with the distribution. |
||
| 14 | * Neither the name of IBM nor the names of its contributors may be |
||
| 15 | used to endorse or promote products derived from this software without |
||
| 16 | specific prior written permission. |
||
| 17 | |||
| 18 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
||
| 19 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||
| 20 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
| 21 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
||
| 22 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
||
| 23 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
||
| 24 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
||
| 25 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
||
| 26 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
||
| 27 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
||
| 28 | POSSIBILITY OF SUCH DAMAGE. |
||
| 29 | */ |
||
| 30 | |||
| 31 | #include |
||
| 32 | #include "local.h" |
||
| 33 | |||
| 6099 | serge | 34 | #ifdef _HAVE_LONG_DOUBLE |
| 35 | |||
| 36 | #if defined (__x86_64__) || defined (__i386__) |
||
| 37 | static const int map[] = { |
||
| 38 | 1, /* round to nearest */ |
||
| 39 | 3, /* round to zero */ |
||
| 40 | 2, /* round to negative infinity */ |
||
| 41 | |||
| 42 | }; |
||
| 43 | |||
| 44 | int |
||
| 45 | __flt_rounds(void) |
||
| 46 | { |
||
| 47 | int x; |
||
| 48 | |||
| 49 | /* Assume that the x87 and the SSE unit agree on the rounding mode. */ |
||
| 50 | __asm("fnstcw %0" : "=m" (x)); |
||
| 51 | return (map[(x >> 10) & 0x03]); |
||
| 52 | } |
||
| 53 | #define FLT_ROUNDS __flt_rounds() |
||
| 54 | #else |
||
| 55 | #define FLT_ROUNDS 0 |
||
| 56 | #endif |
||
| 57 | |||
| 58 | long double |
||
| 59 | _strtold_r (struct _reent *ptr, const char *__restrict s00, |
||
| 60 | char **__restrict se) |
||
| 61 | { |
||
| 4349 | Serge | 62 | #ifdef _LDBL_EQ_DBL |
| 6099 | serge | 63 | /* On platforms where long double is as wide as double. */ |
| 64 | return _strtod_r (ptr, s00, se); |
||
| 65 | #else |
||
| 66 | long double result; |
||
| 67 | |||
| 68 | _strtorx_r (ptr, s00, se, FLT_ROUNDS, &result); |
||
| 69 | return result; |
||
| 70 | #endif |
||
| 71 | } |
||
| 72 | |||
| 4349 | Serge | 73 | long double |
| 4921 | Serge | 74 | strtold (const char *__restrict s00, char **__restrict se) |
| 4349 | Serge | 75 | { |
| 6099 | serge | 76 | return _strtold_r (_REENT, s00, se); |
| 4349 | Serge | 77 | } |
| 78 | |||
| 6099 | serge | 79 | #endif /* _HAVE_LONG_DOUBLE */ |
| 80 |