File: d_sign.c

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#include "auto_f2c.h"

#ifdef KR_headers
double d_sign(a,b) doublereal a, b;
#else
double d_sign(doublereal a, doublereal b)
#endif
{
double x;
x = (a >= 0 ? a : - a);
return( b >= 0 ? x : -x);
}