Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:lib\crypto\curve25519-fiat32.c Create Date:2022-07-28 06:45:32
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Name:subborrow_u25

Proto:static __always_inline u8 subborrow_u25(u8 c, u32 a, u32 b, u32 *low)

Type:u8

Parameter:

TypeParameterName
u8cbool
u32a
u32b
u32 *low
86  x = a - b - bool
87  low = x & (1 << 25) - 1
88  Return x >> 31
Caller
NameDescribe
fe_freeze