Mercurial > cpython-lru_cache-weakref
annotate Python/fmod.c @ 14674:756c8c6535fe legacy-trunk
Make better use of GNU Pth -- patch by Andy Dustman.
I can't test this, so I'm just checking it in with blind faith in Andy.
I've tested that it doesn't broeak a non-Pth build on Linux.
Changes include:
- There's a --with-pth configure option.
- Instead of _GNU_PTH, we test for HAVE_PTH.
- Better signal handling.
- (The config.h.in file is regenerated in a slightly different order.)
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Tue, 19 Sep 2000 00:46:46 +0000 |
| parents | 6f6f965c5e2d |
| children | 2dea40e40d9d |
| rev | line source |
|---|---|
| 145 | 1 |
| 6 | 2 /* Portable fmod(x, y) implementation for systems that don't have it */ |
| 3 | |
| 2434 | 4 #include "config.h" |
| 5 | |
|
13761
59f8cedcf049
merge Include/my*.h into Include/pyport.h
Peter Schneider-Kamp <nowonder@nowonder.de>
parents:
13256
diff
changeset
|
6 #include "pyport.h" |
| 6 | 7 #include <errno.h> |
| 8 | |
| 9 double | |
| 2434 | 10 fmod(double x, double y) |
| 6 | 11 { |
| 12 double i, f; | |
| 13 | |
| 14 if (y == 0.0) { | |
| 15 errno = EDOM; | |
| 16 return 0.0; | |
| 17 } | |
| 18 | |
| 19 /* return f such that x = i*y + f for some integer i | |
| 20 such that |f| < |y| and f has the same sign as x */ | |
| 21 | |
| 22 i = floor(x/y); | |
| 23 f = x - i*y; | |
| 24 if ((x < 0.0) != (y < 0.0)) | |
| 25 f = f-y; | |
| 26 return f; | |
| 27 } |