#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> | |
#include <math-emu/single.h> | |
int | |
lfs(void *frD, void *ea) | |
{ | |
FP_DECL_D(R); | |
FP_DECL_S(A); | |
FP_DECL_EX; | |
float f; | |
#ifdef DEBUG | |
printk("%s: D %p, ea %p\n", __func__, frD, ea); | |
#endif | |
if (copy_from_user(&f, ea, sizeof(float))) | |
return -EFAULT; | |
FP_UNPACK_S(A, f); | |
#ifdef DEBUG | |
printk("A: %ld %lu %ld (%ld) [%08lx]\n", A_s, A_f, A_e, A_c, | |
*(unsigned long *)&f); | |
#endif | |
FP_CONV(D, S, 2, 1, R, A); | |
#ifdef DEBUG | |
printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c); | |
#endif | |
if (R_c == FP_CLS_NAN) { | |
R_e = _FP_EXPMAX_D; | |
_FP_PACK_RAW_2_P(D, frD, R); | |
} else { | |
__FP_PACK_D(frD, R); | |
} | |
return 0; | |
} |