Trailing-Edge
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PDP-10 Archives
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SRI_NIC_PERM_FS_1_19910112
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c/lib5/math/sign.c
There are 7 other files named sign.c in the archive. Click here to see a list.
/*
* +++ NAME +++
*
* SIGN Transfer of sign
*
* +++ INDEX +++
*
* SIGN
* machine independent routines
* math libraries
*
* +++ DESCRIPTION +++
*
* Returns first argument with same sign as second argument.
*
* +++ USAGE +++
*
* double _sign(x, y)
* double x, y;
*
* +++ PROGRAMMER +++
*
* Fred Fish
* Goodyear Aerospace Corp, Arizona Div.
* (602) 932-7000 work
* (602) 894-6881 home
*
* ---
*/
#include "math.h"
double _sign(x, y)
double x, y;
{
if (x > 0.0) {
if (y > 0.0)
return x;
else
return -x;
} else {
if (y < 0.0)
return x;
else
return -x;
}
}