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#include <linux/types.h>
#include <linux/errno.h>
#include <asm/uaccess.h>
#include "soft-fp.h"
#include "double.h"
int
fsub(void *frD, void *frA, void *frB)
{
FP_DECL_D(A);
FP_DECL_D(B);
FP_DECL_D(R);
int ret = 0;
#ifdef DEBUG
printk("%s: %p %p %p\n", __func__, frD, frA, frB);
#endif
__FP_UNPACK_D(A, frA);
__FP_UNPACK_D(B, frB);
#ifdef DEBUG
printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
printk("B: %ld %lu %lu %ld (%ld)\n", B_s, B_f1, B_f0, B_e, B_c);
#endif
if (B_c != FP_CLS_NAN)
B_s ^= 1;
if (A_s != B_s && A_c == FP_CLS_INF && B_c == FP_CLS_INF)
ret |= EFLAG_VXISI;
FP_ADD_D(R, A, B);
#ifdef DEBUG
printk("D: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
#endif
return (ret | __FP_PACK_D(frD, R));
}
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