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rotate.h
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rotate.h
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/*
* Written in 2013 by Gregor Pintar <grpintar@gmail.com>
*
* To the extent possible under law, the author(s) have dedicated
* all copyright and related and neighboring rights to this software
* to the public domain worldwide.
*
* This software is distributed without any warranty.
*
* You should have received a copy of the CC0 Public Domain Dedication.
* If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
*/
#ifndef ROTATE_H
#define ROTATE_H
#include <stdint.h>
static inline uint8_t ROL8(uint8_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 7;
return (x << r) | (x >> (8 - r));
#endif
}
static inline uint8_t ROR8(uint8_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rorb %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 7;
return (x >> r) | (x << (8 - r));
#endif
}
static inline uint16_t ROL16(uint16_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 15;
return (x << r) | (x >> (16 - r));
#endif
}
static inline uint16_t ROR16(uint16_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rorw %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 15;
return (x >> r) | (x << (16 - r));
#endif
}
static inline uint32_t ROL32(uint32_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 31;
return (x << r) | (x >> (32 - r));
#endif
}
static inline uint32_t ROR32(uint32_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rorl %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 31;
return (x >> r) | (x << (32 - r));
#endif
}
static inline uint64_t ROL64(uint64_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& defined(__x86_64__)
__asm__
(
"rolq %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 63;
return (x << r) | (x >> (64 - r));
#endif
}
static inline uint64_t ROR64(uint64_t x, unsigned int r)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& defined(__x86_64__)
__asm__
(
"rorq %%cl, %0"
: "=r" (x)
: "0" (x), "c" (r)
);
return x;
#else
r &= 63;
return (x >> r) | (x << (64 - r));
#endif
}
static inline uint8_t ROL8_1(uint8_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb $1, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 1) | (x >> 7);
#endif
}
static inline uint8_t ROL8_2(uint8_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb $2, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 2) | (x >> 6);
#endif
}
static inline uint8_t ROL8_3(uint8_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb $3, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 3) | (x >> 5);
#endif
}
static inline uint8_t ROL8_4(uint8_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb $4, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 4) | (x >> 4);
#endif
}
static inline uint8_t ROL8_5(uint8_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb $5, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 5) | (x >> 3);
#endif
}
static inline uint8_t ROL8_6(uint8_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb $6, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 6) | (x >> 2);
#endif
}
static inline uint8_t ROL8_7(uint8_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolb $7, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 7) | (x >> 1);
#endif
}
#define ROR8_1 ROL8_7
#define ROR8_2 ROL8_6
#define ROR8_3 ROL8_5
#define ROR8_4 ROL8_4
#define ROR8_5 ROL8_3
#define ROR8_6 ROL8_3
#define ROR8_7 ROL8_1
static inline uint16_t ROL16_01(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $1, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 1) | (x >> 15);
#endif
}
static inline uint16_t ROL16_02(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $2, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 2) | (x >> 14);
#endif
}
static inline uint16_t ROL16_03(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $3, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 3) | (x >> 13);
#endif
}
static inline uint16_t ROL16_04(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $4, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 4) | (x >> 12);
#endif
}
static inline uint16_t ROL16_05(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $5, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 5) | (x >> 11);
#endif
}
static inline uint16_t ROL16_06(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $6, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 6) | (x >> 10);
#endif
}
static inline uint16_t ROL16_07(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $7, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 7) | (x >> 9);
#endif
}
static inline uint16_t ROL16_08(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $8, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 8) | (x >> 8);
#endif
}
static inline uint16_t ROL16_09(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $9, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 9) | (x >> 7);
#endif
}
static inline uint16_t ROL16_10(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $10, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 10) | (x >> 6);
#endif
}
static inline uint16_t ROL16_11(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $11, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 11) | (x >> 5);
#endif
}
static inline uint16_t ROL16_12(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $12, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 12) | (x >> 4);
#endif
}
static inline uint16_t ROL16_13(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $13, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 13) | (x >> 3);
#endif
}
static inline uint16_t ROL16_14(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $14, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 14) | (x >> 2);
#endif
}
static inline uint16_t ROL16_15(uint16_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"rolw $15, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 15) | (x >> 1);
#endif
}
#define ROR16_01 ROL16_15
#define ROR16_02 ROL16_14
#define ROR16_03 ROL16_13
#define ROR16_04 ROL16_12
#define ROR16_05 ROL16_11
#define ROR16_06 ROL16_10
#define ROR16_07 ROL16_09
#define ROR16_08 ROL16_08
#define ROR16_09 ROL16_07
#define ROR16_10 ROL16_06
#define ROR16_11 ROL16_05
#define ROR16_12 ROL16_04
#define ROR16_13 ROL16_03
#define ROR16_14 ROL16_02
#define ROR16_15 ROL16_01
static inline uint32_t ROL32_01(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $1, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 1) | (x >> 31);
#endif
}
static inline uint32_t ROL32_02(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $2, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 2) | (x >> 30);
#endif
}
static inline uint32_t ROL32_03(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $3, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 3) | (x >> 29);
#endif
}
static inline uint32_t ROL32_04(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $4, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 4) | (x >> 28);
#endif
}
static inline uint32_t ROL32_05(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $5, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 5) | (x >> 27);
#endif
}
static inline uint32_t ROL32_06(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $6, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 6) | (x >> 26);
#endif
}
static inline uint32_t ROL32_07(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $7, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 7) | (x >> 25);
#endif
}
static inline uint32_t ROL32_08(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $8, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 8) | (x >> 24);
#endif
}
static inline uint32_t ROL32_09(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $9, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 9) | (x >> 23);
#endif
}
static inline uint32_t ROL32_10(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $10, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 10) | (x >> 22);
#endif
}
static inline uint32_t ROL32_11(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $11, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 11) | (x >> 21);
#endif
}
static inline uint32_t ROL32_12(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $12, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 12) | (x >> 20);
#endif
}
static inline uint32_t ROL32_13(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $13, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 13) | (x >> 19);
#endif
}
static inline uint32_t ROL32_14(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $14, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 14) | (x >> 18);
#endif
}
static inline uint32_t ROL32_15(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $15, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 15) | (x >> 17);
#endif
}
static inline uint32_t ROL32_16(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $16, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 16) | (x >> 16);
#endif
}
static inline uint32_t ROL32_17(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $17, %0"
: "=r" (x)
: "0" (x)
);
return x;
#else
return (x << 17) | (x >> 15);
#endif
}
static inline uint32_t ROL32_18(uint32_t x)
{
#if (defined(__GNUC__) || defined(__clang__)) \
&& (defined(__i386__) || defined(__x86_64__))
__asm__
(
"roll $18, %0"
: "=r" (x)
: "0" (x)