arm/vfp/vfpsingle.c

43 	.exponent	= 255,
50 	pr_debug("VFP: %s: sign=%d exponent=%d significand=%08x\n",
51 		 str, s->sign != 0, s->exponent, s->significand);
61 		vs->exponent -= bits - 1;
76 	int exponent, shift, underflow;
83 	if (vs->exponent == 255 && (vs->significand == 0 || exceptions))
90 		vs->exponent = 0;
94 	exponent = vs->exponent;
104 		exponent -= shift;
109 	vs->exponent = exponent;
117 	underflow = exponent < 0;
119 		significand = vfp_shiftright32jamming(significand, -exponent);
120 		exponent = 0;
122 		vs->exponent = exponent;
151 		exponent += 1;
155 		vs->exponent = exponent;
176 	if (exponent >= 254) {
179 			vs->exponent = 253;
182 			vs->exponent = 255;		/* infinity */
187 			exponent = 0;
188 		if (exponent || significand > 0x80000000)
192 		vs->exponent = exponent;
287 u32 vfp_estimate_sqrt_significand(u32 exponent, u32 significand)
298 	if (exponent & 1) {
365 	vsd.exponent = ((vsm.exponent - 127) >> 1) + 127;
366 	vsd.significand = vfp_estimate_sqrt_significand(vsm.exponent, vsm.significand) + 2;
379 			vsm.significand <<= !(vsm.exponent & 1);
506 	 * If we have an infinity or NaN, the exponent must be 2047.
509 		vdd.exponent = 2047;
514 		vdd.exponent = 0;
516 		vdd.exponent = vsm.exponent + (1023 - 127);
530 	vs.exponent = 127 + 31 - 1;
541 	vs.exponent = 127 + 31 - 1;
567 	if (vsm.exponent >= 127 + 32) {
570 	} else if (vsm.exponent >= 127 - 1) {
571 		int shift = 127 + 31 - vsm.exponent;
604 		if (vsm.exponent | vsm.significand) {
647 	} else if (vsm.exponent >= 127 + 32) {
655 	} else if (vsm.exponent >= 127 - 1) {
656 		int shift = 127 + 31 - vsm.exponent;
685 		if (vsm.exponent | vsm.significand) {
788 	if (vsn->exponent < vsm->exponent) {
798 	if (vsn->exponent == 255)
811 	exp_diff = vsn->exponent - vsm->exponent;
845 	if (vsn->exponent < vsm->exponent) {
857 	if (vsn->exponent == 255) {
858 		if (vsn->significand || (vsm->exponent == 255 && vsm->significand))
860 		if ((vsm->exponent | vsm->significand) == 0) {
864 		vsd->exponent = vsn->exponent;
873 	if ((vsm->exponent | vsm->significand) == 0) {
874 		vsd->exponent = 0;
880 	 * We add 2 to the destination exponent for the same reason as
884 	vsd->exponent = vsn->exponent + vsm->exponent - 127 + 2;
904 	if (vsn.exponent == 0 && vsn.significand)
908 	if (vsm.exponent == 0 && vsm.significand)
918 	if (vsn.exponent == 0 && vsn.significand)
976 	if (vsn.exponent == 0 && vsn.significand)
980 	if (vsm.exponent == 0 && vsm.significand)
999 	if (vsn.exponent == 0 && vsn.significand)
1003 	if (vsm.exponent == 0 && vsm.significand)
1026 	if (vsn.exponent == 0 && vsn.significand)
1030 	if (vsm.exponent == 0 && vsm.significand)
1114 	vsd.exponent = vsn.exponent - vsm.exponent + 127 - 1;
1118 		vsd.exponent++;
1141 	vsd.exponent = 0;
1148 	vsd.exponent = 255;