/* SPDX-License-Identifier: GPL-2.0 */#ifndef _LINUX_MATH64_H#define _LINUX_MATH64_H #include <linux/types.h> #ifdef __x86_64__static inline u64 mul_u64_u64_div64(u64 a, u64 b, u64 c){	u64 q; 	asm ("mulq %2; divq %3" : "=a" (q)				: "a" (a), "rm" (b), "rm" (c)				: "rdx"); 	return q;}#define mul_u64_u64_div64 mul_u64_u64_div64#endif #ifdef __SIZEOF_INT128__static inline u64 mul_u64_u32_shr(u64 a, u32 b, unsigned int shift){	return (u64)(((unsigned __int128)a * b) >> shift);} #else #ifdef __i386__static inline u64 mul_u32_u32(u32 a, u32 b){	u32 high, low; 	asm ("mull %[b]" : "=a" (low), "=d" (high)			 : [a] "a" (a), [b] "rm" (b) ); 	return low | ((u64)high) << 32;}#elsestatic inline u64 mul_u32_u32(u32 a, u32 b){	return (u64)a * b;}#endif static inline u64 mul_u64_u32_shr(u64 a, u32 b, unsigned int shift){	u32 ah, al;	u64 ret; 	al = a;	ah = a >> 32; 	ret = mul_u32_u32(al, b) >> shift;	if (ah)		ret += mul_u32_u32(ah, b) << (32 - shift); 	return ret;} #endif	/* __SIZEOF_INT128__ */ #ifndef mul_u64_u64_div64static inline u64 mul_u64_u64_div64(u64 a, u64 b, u64 c){	u64 quot, rem; 	quot = a / c;	rem = a % c; 	return quot * b + (rem * b) / c;}#endif #endif /* _LINUX_MATH64_H */