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 fsqrt(void *frD, void *frB) 10 { 11 FP_DECL_D(B); 12 FP_DECL_D(R); 13 int ret = 0; 14 15 #ifdef DEBUG 16 printk("%s: %p %p %p %p\n", __func__, frD, frB); 17 #endif 18 19 __FP_UNPACK_D(B, frB); 20 21 #ifdef DEBUG 22 printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c); 23 #endif 24 25 if (B_s && B_c != FP_CLS_ZERO) 26 ret |= EFLAG_VXSQRT; 27 if (B_c == FP_CLS_NAN) 28 ret |= EFLAG_VXSNAN; 29 30 FP_SQRT_D(R, B); 31 32 #ifdef DEBUG 33 printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); 34 #endif 35 36 return (ret | __FP_PACK_D(frD, R)); 37 } 38