1/* 2 * BK Id: SCCS/s.fsubs.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 13fsubs(void *frD, void *frA, void *frB) 14{ 15 FP_DECL_D(A); 16 FP_DECL_D(B); 17 FP_DECL_D(R); 18 int ret = 0; 19 20#ifdef DEBUG 21 printk("%s: %p %p %p\n", __FUNCTION__, frD, frA, frB); 22#endif 23 24 __FP_UNPACK_D(A, frA); 25 __FP_UNPACK_D(B, frB); 26 27#ifdef DEBUG 28 printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); 29 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 30#endif 31 32 if (B_c != FP_CLS_NAN) 33 B_s ^= 1; 34 35 if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF) 36 ret |= EFLAG_VXISI; 37 38 FP_ADD_D(R, A, B); 39 40#ifdef DEBUG 41 printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 42#endif 43 44 return (ret | __FP_PACK_DS(frD, R)); 45} 46