#include <linux/types.h> #include <linux/errno.h> #include <asm/uaccess.h> #include <asm/sfp-machine.h> #include <math-emu/soft-fp.h> #include <math-emu/double.h> int fmsub(void *frD, void *frA, void *frB, void *frC) { FP_DECL_D(R); FP_DECL_D(A); FP_DECL_D(B); FP_DECL_D(C); FP_DECL_D(T); FP_DECL_EX; int ret = 0; #ifdef DEBUG printk("%s: %p %p %p %p\n", __func__, frD, frA, frB, frC); #endif FP_UNPACK_DP(A, frA); FP_UNPACK_DP(B, frB); FP_UNPACK_DP(C, frC); #ifdef DEBUG printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c); printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); printk("C: %ld %lu %lu %ld (%ld)\n", C_s, C_f1, C_f0, C_e, C_c); #endif if ((A_c == FP_CLS_INF && C_c == FP_CLS_ZERO) || (A_c == FP_CLS_ZERO && C_c == FP_CLS_INF)) ret |= EFLAG_VXIMZ; FP_MUL_D(T, A, C); if (B_c != FP_CLS_NAN) B_s ^= 1; if (T_s != B_s && T_c == FP_CLS_INF && B_c == FP_CLS_INF) ret |= EFLAG_VXISI; FP_ADD_D(R, T, B); #ifdef DEBUG printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); #endif __FP_PACK_D(frD, R); return FP_CUR_EXCEPTIONS; }