Lines Matching defs:xm
56 static u64 ieee754dp_get_rounding(int sn, u64 xm)
60 if (xm & (DP_MBIT(3) - 1)) {
65 xm += 0x3 + ((xm >> 3) & 1);
66 /* xm += (xm&0x8)?0x4:0x3 */
70 xm += 0x8;
74 xm += 0x8;
78 return xm;
85 * xm is 3bit extended precision value.
87 union ieee754dp ieee754dp_format(int sn, int xe, u64 xm)
89 assert(xm); /* we don't gen exact zeros (probably should) */
91 assert((xm >> (DP_FBITS + 1 + 3)) == 0); /* no excess */
92 assert(xm & (DP_HIDDEN_BIT << 3));
120 ieee754dp_get_rounding(sn, xm) >> (DP_FBITS + 1 + 3))
124 xm = ieee754dp_get_rounding(sn, xm);
125 xm >>= 1;
127 xm &= ~(DP_MBIT(3) - 1);
133 xm = XDPSRS(xm, es);
135 assert((xm & (DP_HIDDEN_BIT << 3)) == 0);
139 if (xm & (DP_MBIT(3) - 1)) {
141 if ((xm & (DP_HIDDEN_BIT << 3)) == 0) {
147 xm = ieee754dp_get_rounding(sn, xm);
150 if (xm >> (DP_FBITS + 3 + 1)) {
152 xm >>= 1;
157 xm >>= 3;
159 assert((xm >> (DP_FBITS + 1)) == 0); /* no excess */
185 if ((xm & DP_HIDDEN_BIT) == 0) {
190 return builddp(sn, DP_EMIN - 1 + DP_EBIAS, xm);
192 assert((xm >> (DP_FBITS + 1)) == 0); /* no excess */
193 assert(xm & DP_HIDDEN_BIT);
195 return builddp(sn, xe + DP_EBIAS, xm & ~DP_HIDDEN_BIT);