vasilito
ff4ff35918
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
175 lines
5.1 KiB
C
175 lines
5.1 KiB
C
/**
|
|
** @file mruby/numeric.h - Numeric, Integer, Float class
|
|
**
|
|
** See Copyright Notice in mruby.h
|
|
*/
|
|
|
|
#ifndef MRUBY_NUMERIC_H
|
|
#define MRUBY_NUMERIC_H
|
|
|
|
#include "common.h"
|
|
|
|
/**
|
|
* Numeric class and it's sub-classes.
|
|
*
|
|
* Integer and Float
|
|
*/
|
|
MRB_BEGIN_DECL
|
|
|
|
#define TYPED_POSFIXABLE(f,t) ((f) <= (t)MRB_FIXNUM_MAX)
|
|
#define TYPED_NEGFIXABLE(f,t) ((f) >= (t)MRB_FIXNUM_MIN)
|
|
#define TYPED_FIXABLE(f,t) (TYPED_POSFIXABLE(f,t) && TYPED_NEGFIXABLE(f,t))
|
|
#define POSFIXABLE(f) TYPED_POSFIXABLE(f,mrb_int)
|
|
#define NEGFIXABLE(f) TYPED_NEGFIXABLE(f,mrb_int)
|
|
#define FIXABLE(f) TYPED_FIXABLE(f,mrb_int)
|
|
#ifndef MRB_NO_FLOAT
|
|
#ifdef MRB_INT64
|
|
#define FIXABLE_FLOAT(f) ((f)>=-9223372036854775808.0 && (f)<9223372036854775808.0)
|
|
#else
|
|
#define FIXABLE_FLOAT(f) TYPED_FIXABLE(f,mrb_float)
|
|
#endif
|
|
#endif
|
|
|
|
/* utility functions */
|
|
MRB_API mrb_value mrb_num_add(mrb_state *mrb, mrb_value x, mrb_value y);
|
|
MRB_API mrb_value mrb_num_sub(mrb_state *mrb, mrb_value x, mrb_value y);
|
|
MRB_API mrb_value mrb_num_mul(mrb_state *mrb, mrb_value x, mrb_value y);
|
|
/* obsolete old names */
|
|
#define mrb_num_plus(mrb, x, y) mrb_num_add(mrb, x, y)
|
|
#define mrb_num_minus(mrb, x, y) mrb_num_sub(mrb, x, y)
|
|
|
|
MRB_API mrb_value mrb_integer_to_str(mrb_state *mrb, mrb_value x, mrb_int base);
|
|
MRB_API char *mrb_int_to_cstr(char *buf, size_t len, mrb_int n, mrb_int base);
|
|
|
|
/* obsolete function(s); will be removed */
|
|
#define mrb_fixnum_to_str(mrb, x, base) mrb_integer_to_str(mrb, x, base)
|
|
|
|
#ifndef __has_builtin
|
|
#define __has_builtin(x) 0
|
|
#endif
|
|
|
|
#if (defined(__GNUC__) && __GNUC__ >= 5) || \
|
|
(__has_builtin(__builtin_add_overflow) && \
|
|
__has_builtin(__builtin_sub_overflow) && \
|
|
__has_builtin(__builtin_mul_overflow))
|
|
# define MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
|
|
#endif
|
|
|
|
/*
|
|
// Clang 3.8 and 3.9 have problem compiling mruby in 32-bit mode, when MRB_INT64 is set
|
|
// because of missing __mulodi4 and similar functions in its runtime. We need to use custom
|
|
// implementation for them.
|
|
*/
|
|
#ifdef MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
|
|
#if defined(__clang__) && (__clang_major__ == 3) && (__clang_minor__ >= 8) && \
|
|
defined(MRB_32BIT) && defined(MRB_INT64)
|
|
#undef MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef MRB_HAVE_TYPE_GENERIC_CHECKED_ARITHMETIC_BUILTINS
|
|
|
|
static inline mrb_bool
|
|
mrb_int_add_overflow(mrb_int augend, mrb_int addend, mrb_int *sum)
|
|
{
|
|
return __builtin_add_overflow(augend, addend, sum);
|
|
}
|
|
|
|
static inline mrb_bool
|
|
mrb_int_sub_overflow(mrb_int minuend, mrb_int subtrahend, mrb_int *difference)
|
|
{
|
|
return __builtin_sub_overflow(minuend, subtrahend, difference);
|
|
}
|
|
|
|
static inline mrb_bool
|
|
mrb_int_mul_overflow(mrb_int multiplier, mrb_int multiplicand, mrb_int *product)
|
|
{
|
|
return __builtin_mul_overflow(multiplier, multiplicand, product);
|
|
}
|
|
|
|
#else
|
|
|
|
#define MRB_INT_OVERFLOW_MASK ((mrb_uint)1 << (MRB_INT_BIT - 1))
|
|
|
|
static inline mrb_bool
|
|
mrb_int_add_overflow(mrb_int a, mrb_int b, mrb_int *c)
|
|
{
|
|
mrb_uint x = (mrb_uint)a;
|
|
mrb_uint y = (mrb_uint)b;
|
|
mrb_uint z = (mrb_uint)(x + y);
|
|
*c = (mrb_int)z;
|
|
return !!(((x ^ z) & (y ^ z)) & MRB_INT_OVERFLOW_MASK);
|
|
}
|
|
|
|
static inline mrb_bool
|
|
mrb_int_sub_overflow(mrb_int a, mrb_int b, mrb_int *c)
|
|
{
|
|
mrb_uint x = (mrb_uint)a;
|
|
mrb_uint y = (mrb_uint)b;
|
|
mrb_uint z = (mrb_uint)(x - y);
|
|
*c = (mrb_int)z;
|
|
return !!(((x ^ z) & (~y ^ z)) & MRB_INT_OVERFLOW_MASK);
|
|
}
|
|
|
|
static inline mrb_bool
|
|
mrb_int_mul_overflow(mrb_int a, mrb_int b, mrb_int *c)
|
|
{
|
|
#ifdef MRB_INT32
|
|
int64_t n = (int64_t)a * b;
|
|
*c = (mrb_int)n;
|
|
return n > MRB_INT_MAX || n < MRB_INT_MIN;
|
|
#else /* MRB_INT64 */
|
|
if (a > 0 && b > 0 && a > MRB_INT_MAX / b) return TRUE;
|
|
if (a < 0 && b > 0 && a < MRB_INT_MIN / b) return TRUE;
|
|
if (a > 0 && b < 0 && b < MRB_INT_MIN / a) return TRUE;
|
|
if (a < 0 && b < 0 && (a <= MRB_INT_MIN || b <= MRB_INT_MIN || -a > MRB_INT_MAX / -b))
|
|
return TRUE;
|
|
*c = a * b;
|
|
return FALSE;
|
|
#endif
|
|
}
|
|
|
|
#undef MRB_INT_OVERFLOW_MASK
|
|
|
|
#endif
|
|
|
|
#ifndef MRB_NO_FLOAT
|
|
|
|
# define MRB_FLT_RADIX FLT_RADIX
|
|
|
|
# ifdef MRB_USE_FLOAT32
|
|
# define MRB_FLT_MANT_DIG FLT_MANT_DIG
|
|
# define MRB_FLT_EPSILON FLT_EPSILON
|
|
# define MRB_FLT_DIG FLT_DIG
|
|
# define MRB_FLT_MIN_EXP FLT_MIN_EXP
|
|
# define MRB_FLT_MIN FLT_MIN
|
|
# define MRB_FLT_MIN_10_EXP FLT_MIN_10_EXP
|
|
# define MRB_FLT_MAX_EXP FLT_MAX_EXP
|
|
# define MRB_FLT_MAX FLT_MAX
|
|
# define MRB_FLT_MAX_10_EXP FLT_MAX_10_EXP
|
|
|
|
# else /* not MRB_USE_FLOAT32 */
|
|
# define MRB_FLT_MANT_DIG DBL_MANT_DIG
|
|
# define MRB_FLT_EPSILON DBL_EPSILON
|
|
# define MRB_FLT_DIG DBL_DIG
|
|
# define MRB_FLT_MIN_EXP DBL_MIN_EXP
|
|
# define MRB_FLT_MIN DBL_MIN
|
|
# define MRB_FLT_MIN_10_EXP DBL_MIN_10_EXP
|
|
# define MRB_FLT_MAX_EXP DBL_MAX_EXP
|
|
# define MRB_FLT_MAX DBL_MAX
|
|
# define MRB_FLT_MAX_10_EXP DBL_MAX_10_EXP
|
|
# endif /* MRB_USE_FLOAT32 */
|
|
|
|
MRB_API mrb_value mrb_float_to_integer(mrb_state *mrb, mrb_value val);
|
|
|
|
/* internal functions */
|
|
mrb_float mrb_div_float(mrb_float x, mrb_float y);
|
|
mrb_value mrb_float_to_str(mrb_state *mrb, mrb_value x, const char *fmt);
|
|
int mrb_format_float(mrb_float f, char *buf, size_t buf_size, char fmt, int prec, char sign);
|
|
|
|
#endif /* MRB_NO_FLOAT */
|
|
|
|
MRB_END_DECL
|
|
|
|
#endif /* MRUBY_NUMERIC_H */
|