GNU/Linux man pages
Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :
GNU/Linux |
RedHat 5.2(Apollo) |
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copysign(3) |
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copysign − copy sign of a number
#include <math.h>
double copysign(double x, double y);
The copysign() function returns a value whose absolute value matches x, but whose sign matches that of y.
BSD 4.3
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copysign(3) | |