break;
case OP_LONG:
- case OP_DOUBLE:
+ case OP_FLOAT:
case OP_VAR_VALUE:
case OP_VAR_MSYM_VALUE:
*pos += 4;
}
static struct value *
-cast_to_fixed (struct type *type, struct value *arg)
+cast_from_fixed (struct type *type, struct value *arg)
{
- LONGEST val;
-
- if (type == value_type (arg))
- return arg;
- else if (ada_is_fixed_point_type (value_type (arg)))
- val = ada_float_to_fixed (type,
- ada_fixed_to_float (value_type (arg),
- value_as_long (arg)));
- else
- {
- DOUBLEST argd = value_as_double (arg);
-
- val = ada_float_to_fixed (type, argd);
- }
+ struct value *scale = ada_scaling_factor (value_type (arg));
+ arg = value_cast (value_type (scale), arg);
- return value_from_longest (type, val);
+ arg = value_binop (arg, scale, BINOP_MUL);
+ return value_cast (type, arg);
}
static struct value *
-cast_from_fixed (struct type *type, struct value *arg)
+cast_to_fixed (struct type *type, struct value *arg)
{
- DOUBLEST val = ada_fixed_to_float (value_type (arg),
- value_as_long (arg));
+ if (type == value_type (arg))
+ return arg;
- return value_from_double (type, val);
+ struct value *scale = ada_scaling_factor (type);
+ if (ada_is_fixed_point_type (value_type (arg)))
+ arg = cast_from_fixed (value_type (scale), arg);
+ else
+ arg = value_cast (value_type (scale), arg);
+
+ arg = value_binop (arg, scale, BINOP_DIV);
+ return value_cast (type, arg);
}
/* Given two array types T1 and T2, return nonzero iff both arrays
if (noside == EVAL_NORMAL)
arg1 = unwrap_value (arg1);
- /* If evaluating an OP_DOUBLE and an EXPECT_TYPE was provided,
+ /* If evaluating an OP_FLOAT and an EXPECT_TYPE was provided,
then we need to perform the conversion manually, because
evaluate_subexp_standard doesn't do it. This conversion is
necessary in Ada because the different kinds of float/fixed
Similarly, we need to perform the conversion from OP_LONG
ourselves. */
- if ((op == OP_DOUBLE || op == OP_LONG) && expect_type != NULL)
+ if ((op == OP_FLOAT || op == OP_LONG) && expect_type != NULL)
arg1 = ada_value_cast (expect_type, arg1, noside);
return arg1;
}
/* Assuming that TYPE is the representation of an Ada fixed-point
- type, return its delta, or -1 if the type is malformed and the
+ type, return the target floating-point type to be used to represent
+ of this type during internal computation. */
+
+static struct type *
+ada_scaling_type (struct type *type)
+{
+ return builtin_type (get_type_arch (type))->builtin_long_double;
+}
+
+/* Assuming that TYPE is the representation of an Ada fixed-point
+ type, return its delta, or NULL if the type is malformed and the
delta cannot be determined. */
-DOUBLEST
+struct value *
ada_delta (struct type *type)
{
const char *encoding = fixed_type_info (type);
- DOUBLEST num, den;
-
- /* Strictly speaking, num and den are encoded as integer. However,
- they may not fit into a long, and they will have to be converted
- to DOUBLEST anyway. So scan them as DOUBLEST. */
- if (sscanf (encoding, "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT,
- &num, &den) < 2)
- return -1.0;
+ struct type *scale_type = ada_scaling_type (type);
+
+ long long num, den;
+
+ if (sscanf (encoding, "_%lld_%lld", &num, &den) < 2)
+ return nullptr;
else
- return num / den;
+ return value_binop (value_from_longest (scale_type, num),
+ value_from_longest (scale_type, den), BINOP_DIV);
}
/* Assuming that ada_is_fixed_point_type (TYPE), return the scaling
factor ('SMALL value) associated with the type. */
-static DOUBLEST
-scaling_factor (struct type *type)
+struct value *
+ada_scaling_factor (struct type *type)
{
const char *encoding = fixed_type_info (type);
- DOUBLEST num0, den0, num1, den1;
+ struct type *scale_type = ada_scaling_type (type);
+
+ long long num0, den0, num1, den1;
int n;
- /* Strictly speaking, num's and den's are encoded as integer. However,
- they may not fit into a long, and they will have to be converted
- to DOUBLEST anyway. So scan them as DOUBLEST. */
- n = sscanf (encoding,
- "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT
- "_%" DOUBLEST_SCAN_FORMAT "_%" DOUBLEST_SCAN_FORMAT,
+ n = sscanf (encoding, "_%lld_%lld_%lld_%lld",
&num0, &den0, &num1, &den1);
if (n < 2)
- return 1.0;
+ return value_from_longest (scale_type, 1);
else if (n == 4)
- return num1 / den1;
+ return value_binop (value_from_longest (scale_type, num1),
+ value_from_longest (scale_type, den1), BINOP_DIV);
else
- return num0 / den0;
-}
-
-
-/* Assuming that X is the representation of a value of fixed-point
- type TYPE, return its floating-point equivalent. */
-
-DOUBLEST
-ada_fixed_to_float (struct type *type, LONGEST x)
-{
- return (DOUBLEST) x *scaling_factor (type);
-}
-
-/* The representation of a fixed-point value of type TYPE
- corresponding to the value X. */
-
-LONGEST
-ada_float_to_fixed (struct type *type, DOUBLEST x)
-{
- return (LONGEST) (x / scaling_factor (type) + 0.5);
+ return value_binop (value_from_longest (scale_type, num0),
+ value_from_longest (scale_type, den0), BINOP_DIV);
}
\f
projects / deliverable / binutils-gdb.git / blobdiff