arm/vfp/vfpsingle.c

54 static void vfp_single_normalise_denormal(struct vfp_single *vs)
56 	int bits = 31 - fls(vs->significand);
58 	vfp_single_dump("normalise_denormal: in", vs);
61 		vs->exponent -= bits - 1;
62 		vs->significand <<= bits;
65 	vfp_single_dump("normalise_denormal: out", vs);
70 u32 __vfp_single_normaliseround(int sd, struct vfp_single *vs, u32 fpscr, u32 exceptions)
72 u32 vfp_single_normaliseround(int sd, struct vfp_single *vs, u32 fpscr, u32 exceptions, const char *func)
78 	vfp_single_dump("pack: in", vs);
83 	if (vs->exponent == 255 && (vs->significand == 0 || exceptions))
89 	if (vs->significand == 0) {
90 		vs->exponent = 0;
94 	exponent = vs->exponent;
95 	significand = vs->significand;
109 	vs->exponent = exponent;
110 	vs->significand = significand;
111 	vfp_single_dump("pack: normalised", vs);
122 		vs->exponent = exponent;
123 		vs->significand = significand;
124 		vfp_single_dump("pack: tiny number", vs);
142 	} else if ((rmode == FPSCR_ROUND_PLUSINF) ^ (vs->sign != 0))
155 		vs->exponent = exponent;
156 		vs->significand = significand;
157 		vfp_single_dump("pack: overflow", vs);
179 			vs->exponent = 253;
180 			vs->significand = 0x7fffffff;
182 			vs->exponent = 255;		/* infinity */
183 			vs->significand = 0;
192 		vs->exponent = exponent;
193 		vs->significand = significand >> 1;
197 	vfp_single_dump("pack: final", vs);
199 		s32 d = vfp_single_pack(vs);
527 	struct vfp_single vs;
529 	vs.sign = 0;
530 	vs.exponent = 127 + 31 - 1;
531 	vs.significand = (u32)m;
533 	return vfp_single_normaliseround(sd, &vs, fpscr, 0, "fuito");
538 	struct vfp_single vs;
540 	vs.sign = (m & 0x80000000) >> 16;
541 	vs.exponent = 127 + 31 - 1;
542 	vs.significand = vs.sign ? -m : m;
544 	return vfp_single_normaliseround(sd, &vs, fpscr, 0, "fsito");