Lines Matching +full:64 +full:- +full:bit

1 // SPDX-License-Identifier: GPL-2.0
5  * Based on former do_div() implementation from asm-parisc/div64.h:
6  *	Copyright (C) 1999 Hewlett-Packard Co
7  *	Copyright (C) 1999 David Mosberger-Tang <davidm@hpl.hp.com>
10  * Generic C version of 64bit/32bit division and modulo, with
11  * 64bit result and 32bit remainder.
16  * for some CPUs. __div64_32() can be overridden by linking arch-specific
27 /* Not needed on 64bit architectures */
38 	/* Reduce the thing a bit first */  in __div64_32()
43 		rem -= (uint64_t) (high*base) << 32;  in __div64_32()
53 			rem -= b;  in __div64_32()
67  * div_s64_rem - signed 64bit divide with 64bit divisor and remainder
68  * @dividend:	64bit dividend
69  * @divisor:	64bit divisor
70  * @remainder:  64bit remainder
78 		quotient = div_u64_rem(-dividend, abs(divisor), (u32 *)remainder);  in div_s64_rem()
79 		*remainder = -*remainder;  in div_s64_rem()
81 			quotient = -quotient;  in div_s64_rem()
85 			quotient = -quotient;  in div_s64_rem()
93  * div64_u64_rem - unsigned 64bit divide with 64bit divisor and remainder
94  * @dividend:	64bit dividend
95  * @divisor:	64bit divisor
96  * @remainder:  64bit remainder
100  * is kept distinct to avoid slowing down the div64_u64 operation on 32bit
118 			quot--;  in div64_u64_rem()
120 		*remainder = dividend - quot * divisor;  in div64_u64_rem()
123 			*remainder -= divisor;  in div64_u64_rem()
133  * div64_u64 - unsigned 64bit divide with 64bit divisor
134  * @dividend:	64bit dividend
135  * @divisor:	64bit divisor
156 			quot--;  in div64_u64()
157 		if ((dividend - quot * divisor) >= divisor)  in div64_u64()
167  * div64_s64 - signed 64bit divide with 64bit divisor
168  * @dividend:	64bit dividend
169  * @divisor:	64bit divisor
179 	return (quot ^ t) - t;  in div64_s64()
223 		shift = ilog2(a) + ilog2(b) - 62;  in mul_u64_u64_div_u64()