1/* 2 * BK Id: SCCS/s.fnmadds.c 1.6 05/17/01 18:14:22 cort 3 */ 4#include <linux/types.h> 5#include <linux/errno.h> 6#include <asm/uaccess.h> 7 8#include "soft-fp.h" 9#include "double.h" 10#include "single.h" 11 12int 13fnmadds(void *frD, void *frA, void *frB, void *frC) 14{ 15 FP_DECL_D(R); 16 FP_DECL_D(A); 17 FP_DECL_D(B); 18 FP_DECL_D(C); 19 FP_DECL_D(T); 20 int ret = 0; 21 22#ifdef DEBUG 23 printk("%s: %p %p %p %p\n", __FUNCTION__, frD, frA, frB, frC); 24#endif 25 26 __FP_UNPACK_D(A, frA); 27 __FP_UNPACK_D(B, frB); 28 __FP_UNPACK_D(C, frC); 29 30#ifdef DEBUG 31 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 32 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 33 printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); 34#endif 35 36 if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || 37 (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) 38 ret |= EFLAG_VXIMZ; 39 40 FP_MUL_D(T, A, C); 41 42 if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) 43 ret |= EFLAG_VXISI; 44 45 FP_ADD_D(R, T, B); 46 47 if (R_c != FP_CLS_NAN) 48 R_s ^= 1; 49 50#ifdef DEBUG 51 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 52#endif 53 54 return (ret | __FP_PACK_DS(frD, R)); 55} 56