C++ (Cpp) FP_CONV示例

示例#1

文件： stfs.c 项目： 01org/thunderbolt-software-kernel-tree

int
stfs(void *frS, void *ea)
{
	FP_DECL_D(A);
	FP_DECL_S(R);
	FP_DECL_EX;
	float f;

#ifdef DEBUG
	printk("%s: S %p, ea %p\n", __func__, frS, ea);
#endif

	FP_UNPACK_DP(A, frS);

#ifdef DEBUG
	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
#endif

	FP_CONV(S, D, 1, 2, R, A);

#ifdef DEBUG
	printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
#endif

	_FP_PACK_CANONICAL(S, 1, R);
	if (!FP_CUR_EXCEPTIONS || !__FPU_TRAP_P(FP_CUR_EXCEPTIONS)) {
		_FP_PACK_RAW_1_P(S, &f, R);
		if (copy_to_user(ea, &f, sizeof(float)))
			return -EFAULT;
	}

	return FP_CUR_EXCEPTIONS;
}

示例#2

文件： stfs.c 项目： dmgerman/linux-pre-history

int
stfs(void *frS, void *ea)
{
	FP_DECL_D(A);
	FP_DECL_S(R);
	float f;
	int err;

#ifdef DEBUG
	printk("%s: S %p, ea %p\n", __FUNCTION__, frS, ea);
#endif

	__FP_UNPACK_D(A, frS);

#ifdef DEBUG
	printk("A: %ld %lu %lu %ld (%ld)\n", A_s, A_f1, A_f0, A_e, A_c);
#endif

	FP_CONV(S, D, 1, 2, R, A);

#ifdef DEBUG
	printk("R: %ld %lu %ld (%ld)\n", R_s, R_f, R_e, R_c);
#endif

	err = _FP_PACK_CANONICAL(S, 1, R);
	if (!err || !__FPU_TRAP_P(err)) {
		__FP_PACK_RAW_1(S, &f, R);
		if (copy_to_user(ea, &f, sizeof(float)))
			return -EFAULT;
	}

	return err;
}

示例#3

static int fcnvds(struct sh_fpu_soft_struct *fregs, int n)
{
	FP_DECL_EX;
	FP_DECL_D(Fn);
	FP_DECL_S(Fr);
	UNPACK_D(Fn, DRn);
	FP_CONV(S, D, 1, 2, Fr, Fn);
	PACK_S(FPUL, Fr);
	return 0;
}

示例#4

static int fcnvsd(struct sh_fpu_soft_struct *fregs, int n)
{
	FP_DECL_EX;
	FP_DECL_S(Fn);
	FP_DECL_D(Fr);
	UNPACK_S(Fn, FPUL);
	FP_CONV(D, S, 2, 1, Fr, Fn);
	PACK_D(DRn, Fr);
	return 0;
}

示例#5

文件： trunctfdf2.c 项目： christianrober/R05R4-RC2

double __trunctfdf2(long double a)
{
  FP_DECL_EX;
  FP_DECL_Q(A);
  FP_DECL_D(R);
  double r;

  FP_INIT_ROUNDMODE;
  FP_UNPACK_Q(A, a);
#if (2 * _FP_W_TYPE_SIZE) < _FP_FRACBITS_Q
  FP_CONV(D,Q,2,4,R,A);
#else
  FP_CONV(D,Q,1,2,R,A);
#endif
  FP_PACK_D(r, R);
  FP_HANDLE_EXCEPTIONS;

  return r;
}

示例#6

文件： truncdfsf2.c 项目： christianrober/R05R4-RC2

float __truncdfsf2(double a)
{
  FP_DECL_EX;
  FP_DECL_D(A);
  FP_DECL_S(R);
  float r;

  FP_INIT_ROUNDMODE;
  FP_UNPACK_D(A, a);
#if _FP_W_TYPE_SIZE < _FP_FRACBITS_D
  FP_CONV(S,D,1,2,R,A);
#else
  FP_CONV(S,D,1,1,R,A);
#endif
  FP_PACK_S(r, R);
  FP_HANDLE_EXCEPTIONS;

  return r;
}

示例#7

文件： efdcfs.c 项目： mrtos/Logitech-Revue

int
efdcfs(void *rD, u32 *rB)
{
	FP_DECL_S(B);
	FP_DECL_D(R);
	int ret;
	rB[0]=rB[1];

	__FP_UNPACK_S(B, rB);

#ifdef DEBUG
	printk("B: %ld %lu %ld (%ld)\n", B_s, B_f, B_e, B_c);
#endif

	FP_CONV(D, S, 2, 1, R, B);

#ifdef DEBUG
	printk("R: %ld %lu %lu %ld (%ld)\n", R_s, R_f1, R_f0, R_e, R_c);
#endif
	
	return (ret | __FP_PACK_D(rD, R));
}