1 #include <linux/types.h> 2 #include <linux/errno.h> 3 #include <asm/uaccess.h> 4 5 #include <asm/sfp-machine.h> 6 #include <math-emu/soft-fp.h> 7 #include <math-emu/double.h> 8 9 int 10 fsqrt(void *frD, void *frB) 11 { 12 FP_DECL_D(B); 13 FP_DECL_D(R); 14 FP_DECL_EX; 15 16 #ifdef DEBUG 17 printk("%s: %p %p %p %p\n", __func__, frD, frB); 18 #endif 19 20 FP_UNPACK_DP(B, frB); 21 22 #ifdef DEBUG 23 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 24 #endif 25 26 if (B_s && B_c != FP_CLS_ZERO) 27 FP_SET_EXCEPTION(EFLAG_VXSQRT); 28 if (B_c == FP_CLS_NAN) 29 FP_SET_EXCEPTION(EFLAG_VXSNAN); 30 31 FP_SQRT_D(R, B); 32 33 #ifdef DEBUG 34 printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 35 #endif 36 37 __FP_PACK_D(frD, R); 38 39 return FP_CUR_EXCEPTIONS; 40 } 41