* Templates e docs para uso de 'gnuplot'

* Biblioteca 'utils' contendo:
       -> função 'timestamp()' em diferentes versões
       -> programa 'sizeof' para mostrar tamanho dos tipos em C

gnuplot/plot.gp

+#!/usr/bin/gnuplot -c
+## set encoding iso_8859_15
+set encoding utf
+set terminal qt persist
+set grid
+set style data point
+set style function line
+set style line 1 lc 3 pt 7 ps 0.3
+set boxwidth 1
+set xtics
+set xrange ["0":]
+set xlabel  "N (bytes)"
+
+#
+# ALTERNATIVA 1: Tabelas em arquivos separados (2 colunas)
+#
+set ylabel  "<metrica 1>"
+set title   "<campo[marcador 1]>"
+set terminal qt 0 title "<campo[marcador 1]>"
+plot 'plot_exemplo-01.dat' title "<sem otimização>" with linespoints, \
+     'plot_exemplo-02.dat' title "<com otimização>" with linespoints
+
+pause -1
+
+#
+# ALTERNATIVA 2: Tabela com 3 colunas 
+#
+set ylabel  "<metrica 1>"
+set title   "<campo[marcador 1]>"
+set terminal qt 1 title "<campo[marcador 1]>"
+plot 'plot_exemplo-03.dat' using 1:2 title "<sem otimização>" with linespoints, \
+     '' using 1:3 title "<com otimização>" with linespoints
+
+pause -1
+
+#
+# ALTERNATIVA 3: Função
+#
+set style function dots
+set ylabel  "<metrica 1>"
+set title   "<campo[marcador 1]>"
+set terminal qt 2 title "<campo[marcador 1]>"
+f(x,y) = cos(x)*cos(y)
+splot f(x,y) title "easom" with dots
+
+pause -1
+
+# Gerando figura PNG
+set terminal png
+set output "funcao__NxMetrica.png"
+plot 'plot_exemplo-03.dat' using 1:2 title "<sem otimização>" with linespoints, \
+     '' using 1:3 title "<com otimização>" with linespoints
+replot
+unset output
+

gnuplot/plot_exemplo-01.dat

+# Marcador "matPtrVet"
+# n <METRICA 1> (sem otimização)
+64 0.5
+100 50.433210629261
+128  25.798359943835
+2000 27.337482595053
+2048 18.873424079086

gnuplot/plot_exemplo-02.dat

+# Marcador "matPtrVet"
+# n <METRICA 1> (com otimização)
+64 0.5
+100 45.433210629261
+128  21.798359943835
+2000 21.337482595053
+2048 14.873424079086

gnuplot/plot_exemplo-03.dat

+# Marcador "matRowVet" <METRICA 1>
+# n sem_otimz. com_otimiz.
+64 0.7 0.7
+100 50.433210629261 45.433210629261
+128  25.798359943835  21.798359943835
+2000 27.337482595053 21.337482595053
+2048 18.873424079086 14.873424079086

gnuplot/show3D.gp

+#!/usr/bin/gnuplot -c
+## set encoding iso_8859_15
+set encoding utf
+set terminal qt persist
+set grid
+set style data point
+set style function dots
+set style line 1 lc 3 pt 7 ps 0.3
+set boxwidth 1
+set xtics
+set ytics
+set ztics
+
+#
+# EASOM
+#
+set xlabel  "X"
+set ylabel  "Y"
+set zlabel  "Z"
+set title   "EASOM"
+set terminal qt 0 title "EASOM"
+
+set xrange [0:6]; set yrange [0:6]
+set style function dots
+set isosamples 150,150;
+
+f(x,y) = cos(x) * cos(y) * exp(-(x - pi)**2 - (y - pi)**2)
+
+splot f(x,y)
+
+pause -1
+
+#
+# Styblinski-Tang
+#
+set xlabel  "X"
+set ylabel  "Y"
+set zlabel  "Z"
+set title   "Styblinski-Tang"
+set terminal qt 1 title "Styblinski-Tang"
+
+set xrange [-4:4]; set yrange [-4:4];
+set style function dots
+set isosamples 150,150;
+
+f(x,y) = 80 + (x**4 - 16*(x**2) + 5*x + y**4 - 16*(y**2) + 5*y)/2
+
+splot f(x,y)
+
+pause -1
+

utils/sizeof_01.c

+/home/nicolui/.html/grad/Programas/C/sizeof_01.c
\ No newline at end of file

utils/sizeof_02.c

+/home/nicolui/.html/grad/Programas/C/sizeof_02.c
\ No newline at end of file

utils/sizeof_03.c

+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+#include <string.h>
+
+int main ()
+{
+
+  printf("%lu %lu %lu %lu %lu\n", sizeof(long long int), sizeof(long int), sizeof(int), sizeof(short int), sizeof(char));
+
+  return 0;
+
+}
+

utils/utils-00.c

+#include <stdio.h>
+#include "utils.h"
+
+/*  Retorna tempo em milisegundos
+
+    Forma de uso:
+ 
+    double tempo;
+    tempo = timestamp();
+    <trecho de programa do qual se deseja medir tempo>
+    tempo = timestamp() - tempo;
+*/
+
+double timestamp(void)
+{
+  struct timeval tp;
+  gettimeofday(&tp, NULL);
+  // printf("\n*** %7.10lf ms %7.10lf ms\n", tp.tv_sec*1.0e3, tp.tv_usec*1.0e-3);
+  return((double)(tp.tv_sec*1.0e3 + tp.tv_usec*1.0e-3));
+}
+

utils/utils-00.h

+#ifndef __UTILS_H__
+#define __UTILS_H__
+
+#include <stdlib.h>
+#include <sys/time.h>
+
+double timestamp(void);
+
+#endif // __UTILS_H__
+

utils/utils-01.c

+#include <stdio.h>
+
+#include "utils.h"
+
+/*  Retorna tempo em milisegundos
+
+    Forma de uso:
+ 
+    double tempo;
+    tempo = timestamp();
+    <trecho de programa do qual se deseja medir tempo>
+    tempo = timestamp() - tempo;
+*/
+
+double timestamp(void)
+{
+  struct timespec tp;
+  clock_gettime(CLOCK_MONOTONIC_RAW, &tp);
+  return((double)(tp.tv_sec*1.0e3 + tp.tv_nsec*1.0e-6));
+}

utils/utils-01.h

+#ifndef __UTILS_H__
+#define __UTILS_H__
+
+#include <stdlib.h>
+#include <time.h>
+
+double timestamp(void);
+
+#endif // __UTILS_H__
+

utils/utils-02.c

+// by W.Zola (2017)
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+
+#include "utils.h"
+
+/*  Retorna tempo em nanosegundos
+
+    Forma de uso:
+ 
+    chronometer_t *tempo;
+    chrono_reset( &tempo);
+
+    chrono_start( &tempo);
+    <trecho de programa do qual se deseja medir tempo>
+    chrono_stop( &tempo);
+
+    chrono_reportTime( &tempo, "Tempo: ");
+*/
+
+void chrono_reset( chronometer_t *chrono )
+{
+  chrono->xtotal_ns = 0;
+  chrono->xn_events = 0;
+}
+
+void chrono_start( chronometer_t *chrono ) {
+  clock_gettime(CLOCK_MONOTONIC_RAW, &(chrono->xadd_time1) );
+}
+
+void chrono_stop( chronometer_t *chrono ) {
+
+  clock_gettime(CLOCK_MONOTONIC_RAW, &(chrono->xadd_time2) );
+  
+  long long ns1 = chrono->xadd_time1.tv_sec*1.0e9 + chrono->xadd_time1.tv_nsec;
+  long long ns2 = chrono->xadd_time2.tv_sec*1.0e9 + chrono->xadd_time2.tv_nsec;
+  chrono->deltaT_ns = ns2 - ns1;
+}
+
+void chrono_reportTime( chronometer_t *chrono, char *prompt ) {
+  printf("\n%s (ns): %llu ns\n", prompt, chrono->deltaT_ns);
+}
+

utils/utils-02.h

+#ifndef __UTILS_H__
+#define __UTILS_H__
+
+// by W.Zola (2017)
+
+#include <time.h>
+
+typedef struct {
+
+  struct timespec xadd_time1, xadd_time2;
+  long long deltaT_ns;
+    
+} chronometer_t;
+ 
+
+/*  Retorna intervlo de tempo em nanosegundos
+
+    Forma de uso:
+ 
+    chronometer_t *tempo;
+    chrono_reset( &tempo);
+
+    chrono_start( &tempo);
+    <trecho de programa do qual se deseja medir tempo>
+    chrono_stop( &tempo);
+
+    chrono_reportTime( &tempo, "Tempo: ");
+*/
+
+void chrono_reset( chronometer_t *chrono );
+void chrono_start( chronometer_t *chrono );
+void chrono_stop( chronometer_t *chrono );
+void chrono_reportTime( chronometer_t *chrono, chr *prompt );
+
+#endif // __UTILS_H__
+

utils/utils.c

+utils-00.c
\ No newline at end of file

utils/utils.h

+utils-00.h
\ No newline at end of file