df/de5/len__t_8h_source.html

#ifndef RBIMPL_ARITHMETIC_LEN_T_H                    /*-*-C++-*-vi:se ft=cpp:*/

#define RBIMPL_ARITHMETIC_LEN_T_H

#include "ruby/internal/config.h"

#include "ruby/internal/arithmetic/long.h"

#include "ruby/internal/assume.h"

#include "ruby/internal/cast.h"

#include "ruby/internal/value.h"


#define LEN2NUM    RB_LEN2NUM

#define NUM2LEN    RB_NUM2LEN

#define ULEN2NUM   RB_ULEN2NUM

#define rb_len2int rb_len2int_inline

#define RB_LEN2NUM RB_LONG2NUM


#define RB_NUM2LEN RB_NUM2LONG


#define RB_ULEN2NUM RB_ULONG2NUM


static inline int


rb_len2int_inline(rb_len_t n)

{

    int i = RBIMPL_CAST((int)n);


    if /* constexpr */ (sizeof(rb_len_t) <= sizeof(int)) {

        RBIMPL_ASSUME(i == n);

    }


    if (i != n)

        rb_out_of_int(n);


    return i;

}


#endif /* RBIMPL_ARITHMETIC_LEN_T_H */

assume.h
Defines RBIMPL_ASSUME / RBIMPL_UNREACHABLE.

RBIMPL_ASSUME
#define RBIMPL_ASSUME(_)
Wraps (or simulates) __builtin_unreachable.
Definition assume.h:76

rb_len2int_inline
static int rb_len2int_inline(rb_len_t n)
Checks if int can hold the given integer.
Definition len_t.h:51

long.h
Arithmetic conversion between C's long and Ruby's.

rb_out_of_int
void rb_out_of_int(SIGNED_VALUE num)
This is an utility function to raise an rb_eRangeError.
Definition numeric.c:3191

value.h
Defines VALUE and ID.

rb_len_t
long rb_len_t
A signed integer type for lengths and indices of objects such as String and Array.
Definition value.h:131