Mercurial > cpython-lru_cache-weakref

annotate Python/hypot.c @ 44156:fb84bd9500a4

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Remove special-casing of integer operations, to stop using PyInt_CheckExact.
author Martin v. Löwis <martin@v.loewis.de>
date Tue, 04 Dec 2007 20:34:12 +0000
parents 7bc4cc972b0b
children ef859cd754a7
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1 /* hypot() replacement */
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2
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7bc4cc972b0b Merged revisions 58939-58946 via svnmerge from
Christian Heimes <christian@cheimes.de>
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3 #include "Python.h"
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4
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f79434ee41fa Mass ANSIfication of function definitions. Doesn't cover all 'extern'
Thomas Wouters <thomas@python.org>
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5 double hypot(double x, double y)
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6 {
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7 double yx;
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8
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9 x = fabs(x);
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10 y = fabs(y);
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11 if (x < y) {
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12 double temp = x;
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13 x = y;
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14 y = temp;
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15 }
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16 if (x == 0.)
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17 return 0.;
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18 else {
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19 yx = y/x;
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20 return x*sqrt(1.+yx*yx);
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21 }
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22 }