iPXE
Functions
libgcc.h File Reference
#include <stdint.h>
#include <stddef.h>

Go to the source code of this file.

Functions

__libgcc uint64_t __udivmoddi4 (uint64_t num, uint64_t den, uint64_t *rem)
 
__libgcc uint64_t __udivdi3 (uint64_t num, uint64_t den)
 
__libgcc uint64_t __umoddi3 (uint64_t num, uint64_t den)
 
__libgcc int64_t __divmoddi4 (int64_t num, int64_t den, int64_t *rem)
 
__libgcc int64_t __divdi3 (int64_t num, int64_t den)
 
__libgcc int64_t __moddi3 (int64_t num, int64_t den)
 

Function Documentation

◆ __udivmoddi4()

__libgcc uint64_t __udivmoddi4 ( uint64_t  num,
uint64_t  den,
uint64_t rem 
)

Definition at line 3 of file __udivmoddi4.c.

4 {
5  uint64_t quot = 0, qbit = 1;
6 
7  if ( den == 0 ) {
8  return 1/((unsigned)den); /* Intentional divide by zero, without
9  triggering a compiler warning which
10  would abort the build */
11  }
12 
13  /* Left-justify denominator and count shift */
14  while ( (int64_t)den >= 0 ) {
15  den <<= 1;
16  qbit <<= 1;
17  }
18 
19  while ( qbit ) {
20  if ( den <= num ) {
21  num -= den;
22  quot += qbit;
23  }
24  den >>= 1;
25  qbit >>= 1;
26  }
27 
28  if ( rem_p )
29  *rem_p = num;
30 
31  return quot;
32 }
unsigned long long uint64_t
Definition: stdint.h:13
signed long long int64_t
Definition: stdint.h:18
char unsigned long * num
Definition: xenstore.h:17

References num.

Referenced by __divmoddi4(), __udivdi3(), and __umoddi3().

◆ __udivdi3()

__libgcc uint64_t __udivdi3 ( uint64_t  num,
uint64_t  den 
)

Definition at line 7 of file __udivdi3.c.

8 {
9  return __udivmoddi4(num, den, NULL);
10 }
char unsigned long * num
Definition: xenstore.h:17
__libgcc uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem_p)
Definition: __udivmoddi4.c:3
#define NULL
NULL pointer (VOID *)
Definition: Base.h:321

References __udivmoddi4(), NULL, and num.

◆ __umoddi3()

__libgcc uint64_t __umoddi3 ( uint64_t  num,
uint64_t  den 
)

Definition at line 7 of file __umoddi3.c.

8 {
9  uint64_t v;
10 
11  (void) __udivmoddi4(num, den, &v);
12  return v;
13 }
unsigned long long uint64_t
Definition: stdint.h:13
char unsigned long * num
Definition: xenstore.h:17
__libgcc uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem_p)
Definition: __udivmoddi4.c:3

References __udivmoddi4(), and num.

◆ __divmoddi4()

__libgcc int64_t __divmoddi4 ( int64_t  num,
int64_t  den,
int64_t rem 
)

Definition at line 3 of file __divmoddi4.c.

4 {
5  int minus = 0;
6  int64_t v;
7 
8  if ( num < 0 ) {
9  num = -num;
10  minus = 1;
11  }
12  if ( den < 0 ) {
13  den = -den;
14  minus ^= 1;
15  }
16 
17  v = __udivmoddi4(num, den, (uint64_t *)rem_p);
18  if ( minus ) {
19  v = -v;
20  if ( rem_p )
21  *rem_p = -(*rem_p);
22  }
23 
24  return v;
25 }
unsigned long long uint64_t
Definition: stdint.h:13
signed long long int64_t
Definition: stdint.h:18
char unsigned long * num
Definition: xenstore.h:17
__libgcc uint64_t __udivmoddi4(uint64_t num, uint64_t den, uint64_t *rem_p)
Definition: __udivmoddi4.c:3

References __udivmoddi4(), and num.

Referenced by __divdi3(), and __moddi3().

◆ __divdi3()

__libgcc int64_t __divdi3 ( int64_t  num,
int64_t  den 
)

Definition at line 7 of file __divdi3.c.

8 {
9  return __divmoddi4(num, den, NULL);
10 }
__libgcc int64_t __divmoddi4(int64_t num, int64_t den, int64_t *rem_p)
Definition: __divmoddi4.c:3
char unsigned long * num
Definition: xenstore.h:17
#define NULL
NULL pointer (VOID *)
Definition: Base.h:321

References __divmoddi4(), NULL, and num.

◆ __moddi3()

__libgcc int64_t __moddi3 ( int64_t  num,
int64_t  den 
)

Definition at line 7 of file __moddi3.c.

8 {
9  int64_t v;
10 
11  (void) __divmoddi4(num, den, &v);
12  return v;
13 }
signed long long int64_t
Definition: stdint.h:18
__libgcc int64_t __divmoddi4(int64_t num, int64_t den, int64_t *rem_p)
Definition: __divmoddi4.c:3
char unsigned long * num
Definition: xenstore.h:17

References __divmoddi4(), and num.