1 #include <linux/types.h> 2 #include <linux/errno.h> 3 #include <asm/uaccess.h> 4 5 #include "soft-fp.h" 6 #include "double.h" 7 8 int 9 fmsub(void *frD, void *frA, void *frB, void *frC) 10 { 11 FP_DECL_D(R); 12 FP_DECL_D(A); 13 FP_DECL_D(B); 14 FP_DECL_D(C); 15 FP_DECL_D(T); 16 int ret = 0; 17 18 #ifdef DEBUG 19 printk("%s: %p %p %p %p\n", __func__, frD, frA, frB, frC); 20 #endif 21 22 __FP_UNPACK_D(A, frA); 23 __FP_UNPACK_D(B, frB); 24 __FP_UNPACK_D(C, frC); 25 26 #ifdef DEBUG 27 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 28 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 29 printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); 30 #endif 31 32 if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || 33 (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) 34 ret |= EFLAG_VXIMZ; 35 36 FP_MUL_D(T, A, C); 37 38 if (B_c != FP_CLS_NAN) 39 B_s ^= 1; 40 41 if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) 42 ret |= EFLAG_VXISI; 43 44 FP_ADD_D(R, T, B); 45 46 #ifdef DEBUG 47 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 48 #endif 49 50 return (ret | __FP_PACK_D(frD, R)); 51 } 52