19#define TYPED_POSFIXABLE(f,t) ((f) <= (t)MRB_FIXNUM_MAX)
20#define TYPED_NEGFIXABLE(f,t) ((f) >= (t)MRB_FIXNUM_MIN)
21#define TYPED_FIXABLE(f,t) (TYPED_POSFIXABLE(f,t) && TYPED_NEGFIXABLE(f,t))
22#define POSFIXABLE(f) TYPED_POSFIXABLE(f,mrb_int)
23#define NEGFIXABLE(f) TYPED_NEGFIXABLE(f,mrb_int)
24#define FIXABLE(f) TYPED_FIXABLE(f,mrb_int)
27#define FIXABLE_FLOAT(f) ((f)>=-9223372036854775808.0 && (f)<9223372036854775808.0)
29#define FIXABLE_FLOAT(f) TYPED_FIXABLE(f,mrb_float)
38#define mrb_num_plus(mrb, x, y) mrb_num_add(mrb, x, y)
39#define mrb_num_minus(mrb, x, y) mrb_num_sub(mrb, x, y)
42MRB_API char *mrb_int_to_cstr(
char *buf,
size_t len, mrb_int n, mrb_int base);
45#define mrb_fixnum_to_str(mrb, x, base) mrb_integer_to_str(mrb, x, base)
48 #define __has_builtin(x) 0
51#if (defined(__GNUC__) && __GNUC__ >= 5) || \
52 (__has_builtin(__builtin_add_overflow) && \
53 __has_builtin(__builtin_sub_overflow) && \
54 __has_builtin(__builtin_mul_overflow))
55# define MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
63#ifdef MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
64#if defined(__clang__) && (__clang_major__ == 3) && (__clang_minor__ >= 8) && \
65 defined(MRB_32BIT) && defined(MRB_INT64)
66#undef MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
70#ifdef MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
73mrb_int_add_overflow(mrb_int augend, mrb_int addend, mrb_int *sum)
75 return __builtin_add_overflow(augend, addend, sum);
79mrb_int_sub_overflow(mrb_int minuend, mrb_int subtrahend, mrb_int *difference)
81 return __builtin_sub_overflow(minuend, subtrahend, difference);
85mrb_int_mul_overflow(mrb_int multiplier, mrb_int multiplicand, mrb_int *product)
87 return __builtin_mul_overflow(multiplier, multiplicand, product);
92#define MRB_INT_OVERFLOW_MASK ((mrb_uint)1 << (MRB_INT_BIT - 1))
95mrb_int_add_overflow(mrb_int a, mrb_int b, mrb_int *c)
97 mrb_uint x = (mrb_uint)a;
98 mrb_uint y = (mrb_uint)b;
99 mrb_uint z = (mrb_uint)(x + y);
101 return !!(((x ^ z) & (y ^ z)) & MRB_INT_OVERFLOW_MASK);
105mrb_int_sub_overflow(mrb_int a, mrb_int b, mrb_int *c)
107 mrb_uint x = (mrb_uint)a;
108 mrb_uint y = (mrb_uint)b;
109 mrb_uint z = (mrb_uint)(x - y);
111 return !!(((x ^ z) & (~y ^ z)) & MRB_INT_OVERFLOW_MASK);
115mrb_int_mul_overflow(mrb_int a, mrb_int b, mrb_int *c)
118 int64_t n = (int64_t)a * b;
120 return n > MRB_INT_MAX || n < MRB_INT_MIN;
122 if (a > 0 && b > 0 && a > MRB_INT_MAX / b)
return TRUE;
123 if (a < 0 && b > 0 && a < MRB_INT_MIN / b)
return TRUE;
124 if (a > 0 && b < 0 && b < MRB_INT_MIN / a)
return TRUE;
125 if (a < 0 && b < 0 && (a <= MRB_INT_MIN || b <= MRB_INT_MIN || -a > MRB_INT_MAX / -b))
132#undef MRB_INT_OVERFLOW_MASK
138# define MRB_FLT_RADIX FLT_RADIX
140# ifdef MRB_USE_FLOAT32
141# define MRB_FLT_MANT_DIG FLT_MANT_DIG
142# define MRB_FLT_EPSILON FLT_EPSILON
143# define MRB_FLT_DIG FLT_DIG
144# define MRB_FLT_MIN_EXP FLT_MIN_EXP
145# define MRB_FLT_MIN FLT_MIN
146# define MRB_FLT_MIN_10_EXP FLT_MIN_10_EXP
147# define MRB_FLT_MAX_EXP FLT_MAX_EXP
148# define MRB_FLT_MAX FLT_MAX
149# define MRB_FLT_MAX_10_EXP FLT_MAX_10_EXP
152# define MRB_FLT_MANT_DIG DBL_MANT_DIG
153# define MRB_FLT_EPSILON DBL_EPSILON
154# define MRB_FLT_DIG DBL_DIG
155# define MRB_FLT_MIN_EXP DBL_MIN_EXP
156# define MRB_FLT_MIN DBL_MIN
157# define MRB_FLT_MIN_10_EXP DBL_MIN_10_EXP
158# define MRB_FLT_MAX_EXP DBL_MAX_EXP
159# define MRB_FLT_MAX DBL_MAX
160# define MRB_FLT_MAX_10_EXP DBL_MAX_10_EXP
166mrb_float mrb_div_float(mrb_float x, mrb_float y);
168int mrb_format_float(mrb_float f,
char *buf,
size_t buf_size,
char fmt,
int prec,
char sign);
mruby common platform definition"
#define MRB_END_DECL
End declarations in C mode.
Definition common.h:28
#define MRB_BEGIN_DECL
Start declarations in C mode.
Definition common.h:26
#define MRB_API
Declare a public mruby API function.
Definition common.h:79
Definition boxing_nan.h:40