clean up compilation of C example

This commit is contained in:
NunoSempere 2023-05-20 20:20:43 -04:00
parent eaf1915bdb
commit f0493f6955
5 changed files with 164 additions and 133 deletions

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@ -1,15 +0,0 @@
#!/bin/bash
root="$1"
gcc -std=c99 -Wall -lm "$root".c -o "$root" -I/usr/local/include -L/usr/local/lib -lgsl -lgslcblas -lm -g
# Link libraries, for good measure
LD_LIBRARY_PATH=/usr/local/lib
export LD_LIBRARY_PATH
# Increase stack size limit
ulimit -Ss 256000
# -Ss: the soft limit. If you set the hard limit, you then can't raise it
# 256000: around 250Mbs, if I'm reading it correctly.
# run
./samples

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@ -1,13 +0,0 @@
#!/bin/bash
root="$1"
gcc -std=c99 -Wall -lm "$root".c -o "$root" -I/usr/local/include -L/usr/local/lib -lgsl -lgslcblas -lm -g
# Link libraries, for good measure
LD_LIBRARY_PATH=/usr/local/lib
export LD_LIBRARY_PATH
# Increase stack size limit
ulimit -Ss 256000
# -Ss: the soft limit. If you set the hard limit, you then can't raise it
# 256000: around 250Mbs, if I'm reading it correctly.

50
C/samples/makefile Normal file
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@ -0,0 +1,50 @@
# Interface:
# make
# make build
# make format
# make run
# Compiler
CC=gcc
# CC=tcc # <= faster compilation
# Main file
SRC=samples.c
OUTPUT=samples
## Dependencies
DEPS='gsl'
## Flags
INCS=`pkg-config --cflags ${DEPS}`
LIBS=`pkg-config --libs ${DEPS}`
DEBUG= #'-g'
STANDARD=-std=c99
WARNINGS=-Wall
## Formatter
STYLE_BLUEPRINT=webkit
FORMATTER=clang-format -i -style=$(STYLE_BLUEPRINT)
## make build
build: $(SRC)
$(CC) $(DEBUG) $(INCS) $(PLUGS) $(SRC) -o samples $(LIBS)
format: $(SRC)
$(FORMATTER) $(SRC)
run: $(SRC) $(OUTPUT)
echo "Increasing stack size limit, because we are dealing with 1M samples"
ulimit -Ss 256000
# ^ Increase stack size limit
# -Ss: the soft limit. If you set the hard limit, you then can't raise it
# 256000: around 250Mbs, if I'm reading it correctly.
./$(OUTPUT)
# Old:
# Link libraries, for good measure
# LD_LIBRARY_PATH=/usr/local/lib
# export LD_LIBRARY_PATH

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35
C/samples/samples.c Executable file → Normal file
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@ -1,8 +1,8 @@
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <gsl/gsl_rng.h>
#include <gsl/gsl_randist.h>
#include <gsl/gsl_rng.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#define N 1000000
/*
@ -12,20 +12,23 @@
*/
/* Helpers */
void print(double *ys){
void print(double* ys)
{
for (int i = 0; i < N; i++) {
printf("%f\n", ys[i]);
}
printf("\n");
}
void fill(double *ys, float f){
void fill(double* ys, float f)
{
for (int i = 0; i < N; i++) {
ys[i] = f;
}
}
double sum(double *ps, int n){
double sum(double* ps, int n)
{
double result = 0;
for (int i = 0; i < n; i++) {
result += ps[i];
@ -33,7 +36,8 @@ double sum(double *ps, int n){
return (result);
}
void cumsum(double *ps, double *rs, int n){
void cumsum(double* ps, double* rs, int n)
{
double counter = 0;
for (int i = 0; i < n; i++) {
counter += ps[i];
@ -42,19 +46,22 @@ void cumsum(double *ps, double *rs, int n){
}
/* Distributions*/
void normal(gsl_rng * r, double *ys, double mean, double std){
void normal(gsl_rng* r, double* ys, double mean, double std)
{
for (int i = 0; i < N; i++) {
ys[i] = mean + gsl_ran_gaussian(r, std);
}
}
void lognormal(gsl_rng * r, double *ys, double zeta, double sigma){
void lognormal(gsl_rng* r, double* ys, double zeta, double sigma)
{
for (int i = 0; i < N; i++) {
ys[i] = gsl_ran_lognormal(r, zeta, sigma);
}
}
void to(gsl_rng * r, double *ys, double low, double high){
void to(gsl_rng* r, double* ys, double low, double high)
{
double normal95confidencePoint = 1.6448536269514722;
double log_low = log(low);
double log_high = log(high);
@ -64,7 +71,8 @@ void to(gsl_rng * r, double *ys, double low, double high){
}
/* Mixture of distributions */
void mixture(gsl_rng * r, double *dists[], double *weights, int n, double *results){
void mixture(gsl_rng* r, double* dists[], double* weights, int n, double* results)
{
/* Get cummulative, normalized weights */
double sum_weights = sum(weights, n);
double normalized_weights[n];
@ -101,7 +109,8 @@ void mixture(gsl_rng * r, double *dists[], double *weights, int n, double *resul
}
/* Main */
int main(void){
int main(void)
{
/* Initialize GNU Statistical Library (GSL) stuff */
const gsl_rng_type* T;
gsl_rng* r;