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-rw-r--r--StdLib/LibC/StdLib/Xdiv.c76
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diff --git a/StdLib/LibC/StdLib/Xdiv.c b/StdLib/LibC/StdLib/Xdiv.c
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-/** @file
- The div, ldiv, and lldiv, functions compute numer / denom and
- numer % denom in a single operation.
-
- The div, ldiv, and lldiv functions return a structure of type div_t, ldiv_t,
- and lldiv_t, respectively, comprising both the quotient and the remainder.
- The structures shall contain (in either order) the members quot
- (the quotient) and rem (the remainder), each of which has the same type as
- the arguments numer and denom. If either part of the result cannot be
- represented, the behavior is undefined.
-
- Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
- This program and the accompanying materials are licensed and made available under
- the terms and conditions of the BSD License that accompanies this distribution.
- The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.php.
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-**/
-#include <LibConfig.h>
-#include <sys/EfiCdefs.h>
-
-#include <Library/BaseLib.h>
-#include <stdlib.h> /* div_t, ldiv_t, lldiv_t */
-
-/* DivS64x64Remainder will write the remainder as a 64-bit value, so we store
- it first into bigrem and then into r.rem. This avoids writing the remainder
- beyond the end of the div_t structure.
-*/
-div_t
-div(int num, int denom)
-{
- div_t r;
- INT64 bigrem;
-
- r.quot = (int)DivS64x64Remainder( (INT64)num, (INT64)denom, &bigrem);
- r.rem = (int)bigrem;
-
- return (r);
-}
-
-/* DivS64x64Remainder will write the remainder as a 64-bit value, so we store
- it first into bigrem and then into r.rem. This avoids writing the remainder
- beyond the end of the div_t structure.
-*/
-ldiv_t
-ldiv(long num, long denom)
-{
- ldiv_t r;
- INT64 bigrem;
-
- r.quot = (long)DivS64x64Remainder( (INT64)num, (INT64)denom, &bigrem);
- r.rem = (long)bigrem;
-
- return (r);
-}
-
-/* DivS64x64Remainder will write the remainder as a 64-bit value, so we store
- it first into bigrem and then into r.rem. This avoids writing the remainder
- beyond the end of the div_t structure if r.rem is narrower than 64-bits.
-
- Even though most implementations make long long 64 bits wide, we still go
- through bigrem, just-in-case.
-*/
-lldiv_t
-lldiv(long long num, long long denom)
-{
- lldiv_t r;
- INT64 bigrem;
-
- r.quot = (long long)DivS64x64Remainder( (INT64)num, (INT64)denom, &bigrem);
- r.rem = (long long)bigrem;
-
- return (r);
-}