Mercurial > cpython-lru_cache-weakref

annotate Python/hypot.c @ 68231:5fd74354d73b 2.0

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Close 2.0 branch.
author Georg Brandl <georg@python.org>
date Sat, 05 Mar 2011 14:54:19 +0100
parents 59f8cedcf049
children 2dea40e40d9d
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1 /* hypot() replacement */
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2
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3 #include "config.h"
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59f8cedcf049 merge Include/my*.h into Include/pyport.h
Peter Schneider-Kamp <nowonder@nowonder.de>
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4 #include "pyport.h"
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5
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f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
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6 double hypot(double x, double y)
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7 {
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8 double yx;
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9
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10 x = fabs(x);
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11 y = fabs(y);
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12 if (x < y) {
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13 double temp = x;
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14 x = y;
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15 y = temp;
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16 }
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17 if (x == 0.)
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18 return 0.;
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19 else {
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20 yx = y/x;
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21 return x*sqrt(1.+yx*yx);
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22 }
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23 }