Mercurial > cpython-lru_cache-weakref
annotate Python/hypot.c @ 7114:fa09372f7872 legacy-trunk
Better #ifdefs for NetBSD, taking into account that at least on netBSD
1.3, dlopen() etc. are fully implemented, including dlerror().
From Jaromir Dolecek and Ty Sarna.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Mon, 19 Jan 1998 22:03:52 +0000 |
| parents | 37d009b1bf45 |
| children | f79434ee41fa |
| rev | line source |
|---|---|
| 4176 | 1 /* hypot() replacement */ |
| 2 | |
| 3 #include "config.h" | |
| 4 #include "myproto.h" | |
| 5 #include "mymath.h" | |
| 6 | |
| 7 double hypot(x, y) | |
| 8 double x; | |
| 9 double y; | |
| 10 { | |
| 11 double yx; | |
| 12 | |
| 13 x = fabs(x); | |
| 14 y = fabs(y); | |
| 15 if (x < y) { | |
| 16 double temp = x; | |
| 17 x = y; | |
| 18 y = temp; | |
| 19 } | |
| 20 if (x == 0.) | |
| 21 return 0.; | |
| 22 else { | |
| 23 yx = y/x; | |
| 24 return x*sqrt(1.+yx*yx); | |
| 25 } | |
| 26 } |