Esempi in C++ (Cpp) per __builtin_parity

Esempio n. 1

File: ext_input.c Progetto: JFDuval/FlexSEA

//When writing to the AS5047, MSB has to be an Even parity bit
static uint16 add_even_parity_msb(uint16 word)
{
	uint16 ret = 0;
	
	//__builtin_parity() returns 0 for even, 1 for odd
	// MSB = 1 when it's odd
	if(__builtin_parity((int)word))
	{
		ret = (word | PARITY_1);
	}
	else
	{
		ret = (word & PARITY_0);
	}
	
	return ret;
}

Esempio n. 2

File: flash_encrypt.c Progetto: tve/esp-idf

esp_err_t esp_flash_encrypt_check_and_update(void)
{
    uint32_t efuse_blk0 = REG_READ(EFUSE_BLK0_RDATA0_REG);
    ESP_LOGV(TAG, "efuse_blk0 raw value %08x", efuse_blk0);
    uint32_t flash_crypt_cnt = (efuse_blk0 & EFUSE_RD_FLASH_CRYPT_CNT_M) >> EFUSE_RD_FLASH_CRYPT_CNT_S;
    bool flash_crypt_wr_dis = efuse_blk0 & EFUSE_WR_DIS_FLASH_CRYPT_CNT;
    ESP_LOGV(TAG, "efuse FLASH_CRYPT_CNT 0x%x WR_DIS_FLASH_CRYPT_CNT 0x%x", flash_crypt_cnt, flash_crypt_wr_dis);

    if (__builtin_parity(flash_crypt_cnt) == 1) {
        /* Flash is already encrypted */
        int left = (7 - __builtin_popcount(flash_crypt_cnt)) / 2;
        if (flash_crypt_wr_dis) {
            left = 0; /* can't update FLASH_CRYPT_CNT, no more flashes */
        }
        ESP_LOGI(TAG, "flash encryption is enabled (%d plaintext flashes left)", left);
        return ESP_OK;
    }
    else {
        /* Flash is not encrypted, so encrypt it! */
        return encrypt_flash_contents(flash_crypt_cnt, flash_crypt_wr_dis);
    }
}

Esempio n. 3

File: darwin-64.c Progetto: 0mp/freebsd

int __paritysi2 (uSI x) { return __builtin_parity (x); }

Esempio n. 4

File: constant-builtins-2.c Progetto: 4ntoine/clang

char ctz5[__builtin_ctzl(0x10L) == 4 ? 1 : -1];
char ctz6[__builtin_ctzll(0x100LL) == 8 ? 1 : -1];
char ctz7[__builtin_ctzs(1 << (BITSIZE(short) - 1)) == BITSIZE(short) - 1 ? 1 : -1];

char popcount1[__builtin_popcount(0) == 0 ? 1 : -1];
char popcount2[__builtin_popcount(0xF0F0) == 8 ? 1 : -1];
char popcount3[__builtin_popcount(~0) == BITSIZE(int) ? 1 : -1];
char popcount4[__builtin_popcount(~0L) == BITSIZE(int) ? 1 : -1];
char popcount5[__builtin_popcountl(0L) == 0 ? 1 : -1];
char popcount6[__builtin_popcountl(0xF0F0L) == 8 ? 1 : -1];
char popcount7[__builtin_popcountl(~0L) == BITSIZE(long) ? 1 : -1];
char popcount8[__builtin_popcountll(0LL) == 0 ? 1 : -1];
char popcount9[__builtin_popcountll(0xF0F0LL) == 8 ? 1 : -1];
char popcount10[__builtin_popcountll(~0LL) == BITSIZE(long long) ? 1 : -1];

char parity1[__builtin_parity(0) == 0 ? 1 : -1];
char parity2[__builtin_parity(0xb821) == 0 ? 1 : -1];
char parity3[__builtin_parity(0xb822) == 0 ? 1 : -1];
char parity4[__builtin_parity(0xb823) == 1 ? 1 : -1];
char parity5[__builtin_parity(0xb824) == 0 ? 1 : -1];
char parity6[__builtin_parity(0xb825) == 1 ? 1 : -1];
char parity7[__builtin_parity(0xb826) == 1 ? 1 : -1];
char parity8[__builtin_parity(~0) == 0 ? 1 : -1];
char parity9[__builtin_parityl(1L << (BITSIZE(long) - 1)) == 1 ? 1 : -1];
char parity10[__builtin_parityll(1LL << (BITSIZE(long long) - 1)) == 1 ? 1 : -1];

char ffs1[__builtin_ffs(0) == 0 ? 1 : -1];
char ffs2[__builtin_ffs(1) == 1 ? 1 : -1];
char ffs3[__builtin_ffs(0xfbe71) == 1 ? 1 : -1];
char ffs4[__builtin_ffs(0xfbe70) == 5 ? 1 : -1];
char ffs5[__builtin_ffs(1U << (BITSIZE(int) - 1)) == BITSIZE(int) ? 1 : -1];

Esempio n. 5

File: bitops-gcc.c Progetto: kputnam/bits-extras

inline unsigned int parity (unsigned int x) { return __builtin_parity (x); }

Esempio n. 6

File: x86.emulator.cpp Progetto: chubbymaggie/fcd

[[gnu::always_inline]]
static bool x86_parity(uint64_t value)
{
	return !__builtin_parity(static_cast<uint8_t>(value));
}

Esempio n. 7

File: testparity.cpp Progetto: kellen/bitvector-masters

int main(int argc, char* argv[]) {
    unsigned int x = 41;
    return __builtin_parity(x);
}