lfs.c
上传用户:lgb322
上传日期:2013-02-24
资源大小:30529k
文件大小:1k
- /*
- * BK Id: SCCS/s.lfs.c 1.6 05/17/01 18:14:23 cort
- */
- #include <linux/types.h>
- #include <linux/errno.h>
- #include <asm/uaccess.h>
- #include "soft-fp.h"
- #include "double.h"
- #include "single.h"
- int
- lfs(void *frD, void *ea)
- {
- FP_DECL_D(R);
- FP_DECL_S(A);
- float f;
- #ifdef DEBUG
- printk("%s: D %p, ea %pn", __FUNCTION__, 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
- return __FP_PACK_D(frD, R);
- }