Mercurial > cpython-lru_cache-weakref
view Python/hypot.c @ 23305:ef6e31f0cee1 legacy-trunk
builtin_zip(): Take a good guess at how big the result list will be,
and allocate it in one gulp.
This isn't a bugfix, it's just a minor optimization that may or may not
pay off.
| author | Tim Peters <tim.peters@gmail.com> |
|---|---|
| date | Mon, 29 Apr 2002 21:27:32 +0000 |
| parents | 2dea40e40d9d |
| children | 7bc4cc972b0b |
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/* hypot() replacement */ #include "pyconfig.h" #include "pyport.h" double hypot(double x, double y) { double yx; x = fabs(x); y = fabs(y); if (x < y) { double temp = x; x = y; y = temp; } if (x == 0.) return 0.; else { yx = y/x; return x*sqrt(1.+yx*yx); } }
