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Power 6/32 Unix version 1.21

/* THIS IS BASED ON TAHOE FLOATING POINT REPR. ! */
#include <FP.h>


double d_sign(a,b)
double *a, *b;
{
double x;
/*
 x = (*a >= 0 ? *a : - *a);
 return( *b >= 0 ? x : -x);
*/

x = *a;
if ((*a < 0) || (*b < 0))
	*(unsigned long *)&x ^= SIGN_BIT;
return(x);
}

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