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Hacking away

Samuel Lampa samuell

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Hacking away
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samuell / gc_ds_wholefile_tbl_parallel.c
Created May 10, 2013 17:13
Daniel Spångber's C code, when reading whole file, and using table to count, and parallellizing it with OpenMP. See http://saml.rilspace.org/node/248
#include <stdio.h>
#include <stdlib.h>
#define MAXFLEN 70000000 /* Larger than the file. */
int main()
{
char *m=malloc(MAXFLEN);
char tablegc[256];
char tableat[256];
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samuell / gc_DanielSpaangberg_Tbl.c
Created May 11, 2013 11:35
Daniel Spångberg's line by line C code with table optimization.
#include <stdio.h>
int main()
{
char buf[1000];
int gc=0;
int total=0;
char tablegc[256]={0,};
char tabletotal[256]={0,};
FILE *f=fopen("Homo_sapiens.GRCh37.67.dna_rm.chromosome.Y.fa","r");
@samuell
samuell / c_DanielSpaangberg_WholeFile_Tbl_16bit.c
Created May 11, 2013 11:52
See: http://saml.rilspace.org/node/248
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAXFLEN 70000000 /* Larger than the file. */
/* Assume that sizeof(short)==2, unaligned reads ok, etc. */
int main()
{
char *m=malloc(MAXFLEN);
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samuell / c_DanielSpaangberg_WholeFile_Tbl_Par_16bit.c
Created May 11, 2013 11:53
See: http://saml.rilspace.org/node/248
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#define MAXFLEN 70000000 /* Larger than the file. */
/* Assume that sizeof(short)==2, unaligned reads ok, etc. */
int main()
{
char *m=malloc(MAXFLEN);
@samuell
samuell / gc_tbl.d
Last active March 6, 2019 18:35
Table-optimized D version of this benchmark: http://saml.rilspace.org/moar-languagez-gc-content-in-python-d-fpc-c-and-c
import std.stdio;
import std.string;
import std.algorithm;
void main() {
File file = File("Homo_sapiens.GRCh37.67.dna_rm.chromosome.Y.fa","r");
int countat[256];
int countgc[256];
countat['A'] = 1;
countat['T'] = 1;
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samuell / gc_tbl.go
Last active July 4, 2018 12:15
See http://saml.rilspace.com/moar-languagez-gc-content-in-python-d-fpc-c-and-c
package main
import (
"bufio"
"fmt"
"os"
"strings"
)
func main() {
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samuell / gc.go
Created May 16, 2013 07:29
See http://saml.rilspace.org/moar-languagez-gc-content-in-python-d-fpc-c-and-c
package main
import (
"bufio"
"fmt"
"os"
"strings"
)
func main() {
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samuell / gc_rp.go
Created May 16, 2013 12:26
Original: http://play.golang.org/p/dmh1FkGNO- See: http://saml.rilspace.org/moar-languagez-gc-content-in-python-d-fpc-c-and-c
package main
import (
"bufio"
"fmt"
"log"
"os"
)
func main() {
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samuell / gc_rp_ptr.go
Created May 16, 2013 12:26
Original: http://play.golang.org/p/UE9vxrztHO See: http://saml.rilspace.org/moar-languagez-gc-content-in-python-d-fpc-c-and-c
package main
import (
"bufio"
"fmt"
"log"
"os"
)
func main() {
@samuell
samuell / read_fanin_as_range.go
Created June 15, 2013 23:49
This code snippet describes how to read a "select statement" based fan-in channel in Go, as a range, without deadlocks or strange race conditions. The key to get this right is to use "ok-variables" from the input channels to see if they are closed, and if so, set the channels to nil. Then, if in the for loop you continue until both inputs are ni…
package main
import "fmt"
import "time"
//import "runtime"
func numberGenerator() <-chan int {
c := make(chan int)
go func() {
for i := 1; i <= 10; i++ {