fsel.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.fsel.c 1.6 05/17/01 18:14:22 cort
- */
- #include <linux/types.h>
- #include <linux/errno.h>
- #include <asm/uaccess.h>
- #include "soft-fp.h"
- #include "double.h"
- int
- fsel(u32 *frD, void *frA, u32 *frB, u32 *frC)
- {
- FP_DECL_D(A);
- #ifdef DEBUG
- printk("%s: %p %p %p %pn", __FUNCTION__, frD, frA, frB, frC);
- #endif
- __FP_UNPACK_D(A, frA);
- #ifdef DEBUG
- printk("A: %ld %lu %lu %ld (%ld)n", A_s, A_f1, A_f0, A_e, A_c);
- printk("B: %08x %08xn", frB[0], frB[1]);
- printk("C: %08x %08xn", frC[0], frC[1]);
- #endif
- if (A_c == FP_CLS_NAN || (A_c != FP_CLS_ZERO && A_s)) {
- frD[0] = frB[0];
- frD[1] = frB[1];
- } else {
- frD[0] = frC[0];
- frD[1] = frC[1];
- }
- #ifdef DEBUG
- printk("D: %08x.%08xn", frD[0], frD[1]);
- #endif
- return 0;
- }