55 	long int exponent, shift;  in poly_2xm1()  local
60 	exponent = exponent16(arg);  in poly_2xm1()
63 	if (exponent >= 0) {	/* Don't want a |number| >= 1.0 */  in poly_2xm1()
73 	if (exponent == -1) {  in poly_2xm1()
76 		exponent -= 2;  in poly_2xm1()
79 	} else if (exponent == -2) {  in poly_2xm1()
82 		exponent--;  in poly_2xm1()
88 	if (exponent < -2) {  in poly_2xm1()
90 		if (FPU_shrx(&Xll, -2 - exponent) >= 0x80000000U)  in poly_2xm1()
100 	add_two_Xsig(&accumulator, &argSignif, &exponent);  in poly_2xm1()
106 		shr_Xsig(&accumulator, -exponent);  in poly_2xm1()
110 		exponent = 1;  in poly_2xm1()
119 		if (exponent < 0)  in poly_2xm1()
120 			shr_Xsig(&Denom, -exponent);  in poly_2xm1()
121 		else if (exponent > 0) {  in poly_2xm1()
133 	exponent += round_Xsig(&accumulator);  in poly_2xm1()
137 	setexponent16(result, exponent);  in poly_2xm1()