Skip to content
GitLab
Commit 296f5ac0 authored by Kim, Jungwon's avatar Kim, Jungwon
Browse files

minor

parent 11d3e256
Expand all Hide whitespace changes
Inline Side-by-side
kv/apps/meraculous/Debug.h deleted 100644 → 0
View file @ 11d3e256
#ifndef PAPYRUS_KV_DEBUG_H
#define PAPYRUS_KV_DEBUG_H
#include <stdio.h>
//#define _TRACE_ENABLE
#define _CHECK_ENABLE
#define _DEBUG_ENABLE
#define _INFO_ENABLE
#define _ERROR_ENABLE
#define _TODO_ENABLE
#define _COLOR_DEBUG
#ifdef _COLOR_DEBUG
#define RED "\033[22;31m"
#define GREEN "\033[22;32m"
#define YELLOW "\033[22;33m"
#define BLUE "\033[22;34m"
#define PURPLE "\033[22;35m"
#define CYAN "\033[22;36m"
#define GRAY "\033[22;37m"
#define _RED "\033[22;41m"
#define _GREEN "\033[22;42m"
#define _YELLOW "\033[22;43m"
#define _BLUE "\033[22;44m"
#define _PURPLE "\033[22;45m"
#define _CYAN "\033[22;46m"
#define _GRAY "\033[22;47m"
#define RESET "\e[m"
#else
#define RED
#define GREEN
#define YELLOW
#define BLUE
#define PURPLE
#define CYAN
#define GRAY
#define _RED
#define _GREEN
#define _YELLOW
#define _BLUE
#define _PURPLE
#define _CYAN
#define _GRAY
#define RESET
#endif
extern char nick_[];
#ifdef _TRACE_ENABLE
#define _trace(fmt, ...) { printf( BLUE "[T] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#define __trace(fmt, ...) { printf(_BLUE "[T] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#else
#define _trace(fmt, ...)
#define __trace(fmt, ...)
#endif
#ifdef _CHECK_ENABLE
#define _check() { printf( PURPLE "[C] %s [%s:%d:%s]" RESET "\n", nick_, __FILE__, __LINE__, __func__); fflush(stdout); }
#define __check() { printf(_PURPLE "[C] %s [%s:%d:%s]" RESET "\n", nick_, __FILE__, __LINE__, __func__); fflush(stdout); }
#else
#define _check()
#define __check()
#endif
#ifdef _DEBUG_ENABLE
#define _debug(fmt, ...) { printf( CYAN "[D] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#define __debug(fmt, ...) { printf(_CYAN "[D] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#else
#define _debug(fmt, ...)
#define __debug(fmt, ...)
#endif
#ifdef _INFO_ENABLE
#define _info(fmt, ...) { printf( YELLOW "[I] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#define __info(fmt, ...) { printf(_YELLOW "[I] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#else
#define _info(fmt, ...)
#define __info(fmt, ...)
#endif
#ifdef _ERROR_ENABLE
#define _error(fmt, ...) { printf( RED "[E] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#define __error(fmt, ...) { printf(_RED "[E] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#else
#define _error(fmt, ...)
#define __error(fmt, ...)
#endif
#ifdef _TODO_ENABLE
#define _todo(fmt, ...) { printf( GREEN "[TODO] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#define __todo(fmt, ...) { printf(_GREEN "[TODO] %s [%s:%d:%s] " fmt RESET "\n", nick_, __FILE__, __LINE__, __func__, __VA_ARGS__); fflush(stdout); }
#else
#define _todo(fmt, ...)
#define __todo(fmt, ...)
#endif
#endif /* PAPYRUS_KV_DEBUG_H */
kv/apps/meraculous/Deleter.h deleted 100644 → 0
View file @ 11d3e256
/****************************************************************/
/* Parallel Combinatorial BLAS Library (for Graph Computations) */
/* version 1.2 -------------------------------------------------*/
/* date: 10/06/2011 --------------------------------------------*/
/* authors: Aydin Buluc (abuluc@lbl.gov), Adam Lugowski --------*/
/****************************************************************/
/*
Copyright (c) 2011, Aydin Buluc
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef _DELETER_H_
#define _DELETER_H_
#include <iostream>
using namespace std;
struct DeletePtrIf
{
template<typename T, typename _BinaryPredicate, typename Pred>
void operator()(const T *ptr, _BinaryPredicate cond, Pred first, Pred second) const
{
if(cond(first,second))
delete ptr;
}
};
template<typename A>
void DeleteAll(A arr1)
{
delete [] arr1;
}
template<typename A, typename B>
void DeleteAll(A arr1, B arr2)
{
delete [] arr2;
DeleteAll(arr1);
}
template<typename A, typename B, typename C>
void DeleteAll(A arr1, B arr2, C arr3)
{
delete [] arr3;
DeleteAll(arr1, arr2);
}
template<typename A, typename B, typename C, typename D>
void DeleteAll(A arr1, B arr2, C arr3, D arr4)
{
delete [] arr4;
DeleteAll(arr1, arr2, arr3);
}
template<typename A, typename B, typename C, typename D, typename E>
void DeleteAll(A arr1, B arr2, C arr3, D arr4, E arr5)
{
delete [] arr5;
DeleteAll(arr1, arr2, arr3, arr4);
}
template<typename A, typename B, typename C, typename D, typename E, typename F>
void DeleteAll(A arr1, B arr2, C arr3, D arr4, E arr5, F arr6)
{
delete [] arr6;
DeleteAll(arr1, arr2, arr3, arr4,arr5);
}
#endif
kv/apps/meraculous/Friends.h deleted 100644 → 0
View file @ 11d3e256
#ifndef _FRIENDS_H_
#define _FRIENDS_H_
#include <iostream>
#include <vector>
#include <string>
#include <algorithm>
#include <fstream>
#include <sstream>
#include "Kmer.hpp"
#include "KmerIterator.hpp"
#include "Deleter.h"
#include <sys/stat.h>
using namespace std;
#ifndef MAX_KMER_SIZE
#define MAX_KMER_SIZE 64
#endif
#define KMERLONGS MAX_KMER_SIZE/32 // 32 = numbits(uint64_t)/2- with 2 being the number of bits needed per nucleotide
typedef array<uint64_t, KMERLONGS> MERARR;
struct filedata
{
char filename[256];
size_t filesize;
};
ostream & operator<<(ostream & os, uint8_t val)
{
return os << static_cast<int>(val);
}
struct kmerpack // the pair<MERARR,int> used as value_type in map is not guaranteed to be contiguous in memory
{
MERARR arr;
int count;
bool operator > (const kmerpack & rhs) const
{ return (arr > rhs.arr); }
bool operator < (const kmerpack & rhs) const
{ return (arr < rhs.arr); }
bool operator == (const kmerpack & rhs) const
{ return (arr == rhs.arr); }
};
struct ufxpack // 38bytes for k=51
{
MERARR arr; // ~128-bits=16bytes for k=51
int count;
char left;
char right;
int leftmin;
int leftmax;
int rightmin;
int rightmax;
bool operator > (const ufxpack & rhs) const
{ return (arr > rhs.arr); }
bool operator < (const ufxpack & rhs) const
{ return (arr < rhs.arr); }
bool operator == (const ufxpack & rhs) const
{ return (arr == rhs.arr); }
};
void PackIntoUFX(array<int,4> & leftcnt, array<int,4> & righcnt, int count, ufxpack & pack)
{
pair<int, char> lsort[4] = {make_pair(leftcnt[0], 'A'), make_pair(leftcnt[1], 'C'), make_pair(leftcnt[2], 'G'), make_pair(leftcnt[3], 'T')};
pair<int, char> rsort[4] = {make_pair(righcnt[0], 'A'), make_pair(righcnt[1], 'C'), make_pair(righcnt[2], 'G'), make_pair(righcnt[3], 'T')};
sort(lsort, lsort+4);
sort(rsort, rsort+4);
pack.left = lsort[3].second; // max entry guarenteed to exist
pack.leftmax = lsort[3].first;
pack.leftmin = lsort[2].first;
pack.right = rsort[3].second;
pack.rightmax = rsort[3].first;
pack.rightmin = rsort[2].first;
pack.count = count;
}
struct SNPdata
{
MERARR karr;
char extA;
char extB;
bool operator > (const SNPdata & rhs) const
{ return (karr > rhs.karr); }
bool operator < (const SNPdata & rhs) const
{ return (karr < rhs.karr); }
bool operator == (const SNPdata & rhs) const
{ return (karr == rhs.karr); }
};
#endif
kv/apps/meraculous/Kmer.cpp deleted 100644 → 0
View file @ 11d3e256
#include "Kmer.hpp"
#include <bitset>
#include <string>
#include <iostream>
using namespace std;
/*// use: int2bin(a, buffer, buf_size);
// pre: buf_size >= 8 and buffer has space for buf_size elements
// post: buffer[0,...,7] is the binary representation of a
void int2bin(uint32_t a, char *buffer, int buf_size) {
//buffer += (buf_size - 1);
for (int i = 7; i >= 0; i--) {
*buffer++ = (a & 1) + '0';
a >>= 1;
}
}
*/
static const uint64_t twin_table[256] = {
0xFF, 0xBF, 0x7F, 0x3F, 0xEF, 0xAF, 0x6F, 0x2F,
0xDF, 0x9F, 0x5F, 0x1F, 0xCF, 0x8F, 0x4F, 0x0F,
0xFB, 0xBB, 0x7B, 0x3B, 0xEB, 0xAB, 0x6B, 0x2B,
0xDB, 0x9B, 0x5B, 0x1B, 0xCB, 0x8B, 0x4B, 0x0B,
0xF7, 0xB7, 0x77, 0x37, 0xE7, 0xA7, 0x67, 0x27,
0xD7, 0x97, 0x57, 0x17, 0xC7, 0x87, 0x47, 0x07,
0xF3, 0xB3, 0x73, 0x33, 0xE3, 0xA3, 0x63, 0x23,
0xD3, 0x93, 0x53, 0x13, 0xC3, 0x83, 0x43, 0x03,
0xFE, 0xBE, 0x7E, 0x3E, 0xEE, 0xAE, 0x6E, 0x2E,
0xDE, 0x9E, 0x5E, 0x1E, 0xCE, 0x8E, 0x4E, 0x0E,
0xFA, 0xBA, 0x7A, 0x3A, 0xEA, 0xAA, 0x6A, 0x2A,
0xDA, 0x9A, 0x5A, 0x1A, 0xCA, 0x8A, 0x4A, 0x0A,
0xF6, 0xB6, 0x76, 0x36, 0xE6, 0xA6, 0x66, 0x26,
0xD6, 0x96, 0x56, 0x16, 0xC6, 0x86, 0x46, 0x06,
0xF2, 0xB2, 0x72, 0x32, 0xE2, 0xA2, 0x62, 0x22,
0xD2, 0x92, 0x52, 0x12, 0xC2, 0x82, 0x42, 0x02,
0xFD, 0xBD, 0x7D, 0x3D, 0xED, 0xAD, 0x6D, 0x2D,
0xDD, 0x9D, 0x5D, 0x1D, 0xCD, 0x8D, 0x4D, 0x0D,
0xF9, 0xB9, 0x79, 0x39, 0xE9, 0xA9, 0x69, 0x29,
0xD9, 0x99, 0x59, 0x19, 0xC9, 0x89, 0x49, 0x09,
0xF5, 0xB5, 0x75, 0x35, 0xE5, 0xA5, 0x65, 0x25,
0xD5, 0x95, 0x55, 0x15, 0xC5, 0x85, 0x45, 0x05,
0xF1, 0xB1, 0x71, 0x31, 0xE1, 0xA1, 0x61, 0x21,
0xD1, 0x91, 0x51, 0x11, 0xC1, 0x81, 0x41, 0x01,
0xFC, 0xBC, 0x7C, 0x3C, 0xEC, 0xAC, 0x6C, 0x2C,
0xDC, 0x9C, 0x5C, 0x1C, 0xCC, 0x8C, 0x4C, 0x0C,
0xF8, 0xB8, 0x78, 0x38, 0xE8, 0xA8, 0x68, 0x28,
0xD8, 0x98, 0x58, 0x18, 0xC8, 0x88, 0x48, 0x08,
0xF4, 0xB4, 0x74, 0x34, 0xE4, 0xA4, 0x64, 0x24,
0xD4, 0x94, 0x54, 0x14, 0xC4, 0x84, 0x44, 0x04,
0xF0, 0xB0, 0x70, 0x30, 0xE0, 0xA0, 0x60, 0x20,
0xD0, 0x90, 0x50, 0x10, 0xC0, 0x80, 0x40, 0x00
};
/*static const uint8_t base_swap[256] = {
0x00, 0x40, 0x80, 0xc0, 0x10, 0x50, 0x90, 0xd0,
0x20, 0x60, 0xa0, 0xe0, 0x30, 0x70, 0xb0, 0xf0,
0x04, 0x44, 0x84, 0xc4, 0x14, 0x54, 0x94, 0xd4,
0x24, 0x64, 0xa4, 0xe4, 0x34, 0x74, 0xb4, 0xf4,
0x08, 0x48, 0x88, 0xc8, 0x18, 0x58, 0x98, 0xd8,
0x28, 0x68, 0xa8, 0xe8, 0x38, 0x78, 0xb8, 0xf8,
0x0c, 0x4c, 0x8c, 0xcc, 0x1c, 0x5c, 0x9c, 0xdc,
0x2c, 0x6c, 0xac, 0xec, 0x3c, 0x7c, 0xbc, 0xfc,
0x01, 0x41, 0x81, 0xc1, 0x11, 0x51, 0x91, 0xd1,
0x21, 0x61, 0xa1, 0xe1, 0x31, 0x71, 0xb1, 0xf1,
0x05, 0x45, 0x85, 0xc5, 0x15, 0x55, 0x95, 0xd5,
0x25, 0x65, 0xa5, 0xe5, 0x35, 0x75, 0xb5, 0xf5,
0x09, 0x49, 0x89, 0xc9, 0x19, 0x59, 0x99, 0xd9,
0x29, 0x69, 0xa9, 0xe9, 0x39, 0x79, 0xb9, 0xf9,
0x0d, 0x4d, 0x8d, 0xcd, 0x1d, 0x5d, 0x9d, 0xdd,
0x2d, 0x6d, 0xad, 0xed, 0x3d, 0x7d, 0xbd, 0xfd,
0x02, 0x42, 0x82, 0xc2, 0x12, 0x52, 0x92, 0xd2,
0x22, 0x62, 0xa2, 0xe2, 0x32, 0x72, 0xb2, 0xf2,
0x06, 0x46, 0x86, 0xc6, 0x16, 0x56, 0x96, 0xd6,
0x26, 0x66, 0xa6, 0xe6, 0x36, 0x76, 0xb6, 0xf6,
0x0a, 0x4a, 0x8a, 0xca, 0x1a, 0x5a, 0x9a, 0xda,
0x2a, 0x6a, 0xaa, 0xea, 0x3a, 0x7a, 0xba, 0xfa,
0x0e, 0x4e, 0x8e, 0xce, 0x1e, 0x5e, 0x9e, 0xde,
0x2e, 0x6e, 0xae, 0xee, 0x3e, 0x7e, 0xbe, 0xfe,
0x03, 0x43, 0x83, 0xc3, 0x13, 0x53, 0x93, 0xd3,
0x23, 0x63, 0xa3, 0xe3, 0x33, 0x73, 0xb3, 0xf3,
0x07, 0x47, 0x87, 0xc7, 0x17, 0x57, 0x97, 0xd7,
0x27, 0x67, 0xa7, 0xe7, 0x37, 0x77, 0xb7, 0xf7,
0x0b, 0x4b, 0x8b, 0xcb, 0x1b, 0x5b, 0x9b, 0xdb,
0x2b, 0x6b, 0xab, 0xeb, 0x3b, 0x7b, 0xbb, 0xfb,
0x0f, 0x4f, 0x8f, 0xcf, 0x1f, 0x5f, 0x9f, 0xdf,
0x2f, 0x6f, 0xaf, 0xef, 0x3f, 0x7f, 0xbf, 0xff
};
*/
// use: km = Kmer();
// pre:
// post: the DNA string in km is AA....AAA (k times A)
Kmer::Kmer() {
//memset(bytes,0,MAX_K/4);
for (size_t i = 0; i < MAX_K/32; i++) {
longs[i] = 0;
}
}
// use: _km = Kmer(km);
// pre: s[0],...,s[k] are all equal to 'A','C','G' or 'T'
// post: the DNA string in _km and is the same as in km
Kmer::Kmer(const Kmer& o) {
//memcpy(bytes,o.bytes,MAX_K/4);
for (size_t i = 0; i < MAX_K/32; i++) {
longs[i] = o.longs[i];
}
}
// use: km = Kmer(s);
// pre: s[0],...,s[k] are all equal to 'A','C','G' or 'T'
// post: the DNA string in km is now the same as s
Kmer::Kmer(const char *s) {
set_kmer(s);
}
// use: _km = km;
// pre:
// post: the DNA string in _km and is the same as in km
Kmer& Kmer::operator=(const Kmer& o) {
if (this != &o) {
for (size_t i = 0; i < MAX_K/32; i++) {
longs[i] = o.longs[i];
}
//memcpy(bytes, o.bytes, MAX_K/4);
}
return *this;
}
// use: km = Kmer();
// pre:
// post: The last bit in the bit array which stores the DNA string has been set to 1
// which indicates that the km is invalid
void Kmer::set_deleted() {
memset(bytes,0xff,MAX_K/4);
}
// use: b = (km1 < km2);
// pre:
// post: b is true <==> the DNA strings in km1 is alphabetically smaller than
// the DNA string in km2
bool Kmer::operator<(const Kmer& o) const {
bool r = false;
for (size_t i = 0; i < MAX_K/32; ++i) {
if (longs[i] < o.longs[i])
return true;
if (longs[i] > o.longs[i])
return false;
}
return false;
/*
for (size_t i = 0; i < k_bytes-1; ++i) {
if (base_swap[bytes[i]] > base_swap[o.bytes[i]]) {
return false;
} else if (base_swap[bytes[i]] < base_swap[o.bytes[i]]) {
return true;
}
}
if (base_swap[bytes[k_bytes-1] & k_modmask] >= base_swap[o.bytes[k_bytes-1] & k_modmask]) {
return false;
}
return true;
*/
}
// use: b = (km1 == km2);
// pre:
// post: b is true <==> the DNA strings in km1 and km2 are equal
bool Kmer::operator==(const Kmer& o) const {
for (size_t i = 0; i < MAX_K/32; i++) {
if (longs[i] != o.longs[i]) {
return false;
}
}
return true;
// return memcmp(bytes,o.bytes,MAX_K/4)==0;
}
// use: km.set_kmer(s);
// pre: s[0],...,s[k-1] are all 'A','C','G' or 'T'
// post: The DNA string in km is now equal to s
void Kmer::set_kmer(const char *s) {
size_t i,j,l;
memset(bytes,0,MAX_K/4);
for (i = 0; i < k; ++i) {
j = i % 32;
l = i/32;
assert(*s != '\0');
size_t x = ((*s) & 4) >> 1;
longs[l] |= ((x + ((x ^ (*s & 2)) >>1)) << (2*(31-j)));
/*
switch(*s) {
case 'A': break;
case 'C': longs[l] |= (0x01 << (2*j)); break;
case 'G': longs[l] |= (0x02 << (2*j)); break;
case 'T': longs[l] |= (0x03 << (2*j)); break;
}*/
s++;
}
}
// use: i = km.hash();
// pre:
// post: i is the hash value of km
uint64_t Kmer::hash() const {
uint64_t ret;
MurmurHash3_x64_64((const void*)bytes,k_bytes,0,&ret);
return ret;
}
// use: rep = km.rep();
// pre:
// post: rep is km.twin() if the DNA string in km.twin() is alphabetically smaller than
// the DNA string in km, else rep is km
Kmer Kmer::rep() const {
Kmer tw = twin();
return (tw < *this) ? tw : *this;
}
// use: tw = km.twin();
// pre:
// post: tw is the twin kmer with respect to km,
// i.e. if the DNA string in km is 'GTCA'
// then the DNA string in tw is 'TGAC'
Kmer Kmer::twin() const {
Kmer km(*this);
size_t nlongs = (k+31)/32;
for (size_t i = 0; i < nlongs; i++) {
uint64_t v = longs[i];
km.longs[nlongs-1-i] =
(twin_table[v & 0xFF] << 56) |
(twin_table[(v>>8) & 0xFF] << 48) |
(twin_table[(v>>16) & 0xFF] << 40) |
(twin_table[(v>>24) & 0xFF] << 32) |
(twin_table[(v>>32) & 0xFF] << 24) |
(twin_table[(v>>40) & 0xFF] << 16) |
(twin_table[(v>>48) & 0xFF] << 8) |
(twin_table[(v>>56)]);
}
size_t shift = (k%32) ? 2*(32-(k%32)) : 0 ;
// uint64_t shiftmask = (k%32) ? (((1ULL << (2 * (k%32)))-1)<< shift) : ~0x0ULL;
uint64_t shiftmask = (k%32) ? (((1ULL<< shift)-1) << (64-shift)) : 0ULL;
km.longs[0] = km.longs[0] << shift;
for (size_t i = 1; i < nlongs; i++) {
km.longs[i-1] |= (km.longs[i] & shiftmask) >> (64-shift);
km.longs[i] = km.longs[i] << shift;
}
return km;
}
// use: link = km.getLink(index);
// pre: 0 <= index < 8
// post: gives the forward kmer with the (index % 4) character in 'A','C','G' or 'T' if index < 4
// else the backward kmer with the (index % 4) character in 'A','C','G' or 'T'
Kmer Kmer::getLink(const size_t index) const {
assert(index >= 0 && index < 8);
char c;
switch (index % 4) {
case 0: c = 'A'; break;
case 1: c = 'C'; break;
case 2: c = 'G'; break;
case 3: c = 'T'; break;
}
return (index < 4) ? forwardBase(c) : backwardBase(c);
}
// use: fw = km.forwardBase(c)
// pre:
// post: fw is the forward kmer from km with last character c,
// i.e. if the DNA string in km is 'ACGT' and c equals 'T' then
// the DNA string in fw is 'CGTT'
Kmer Kmer::forwardBase(const char b) const {
Kmer km(*this);
km.longs[0] = km.longs[0] << 2;
size_t nlongs = (k+31)/32;
for (size_t i = 1; i < nlongs; i++) {
km.longs[i-1] |= (km.longs[i] & (3ULL<<62)) >> 62;
km.longs[i] = km.longs[i] << 2;
}
uint64_t x = (b & 4) >>1;
km.longs[nlongs-1] |= (x + ((x ^ (b & 2)) >>1 )) << (2*(31-((k-1)%32)));
return km;
/********
km.shiftBackward(2);
km.bytes[k_bytes-1] &= Kmer::k_modmask;