From 56b6561ae4f1e238ba1a65701f91b40636037cc2 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Tue, 24 Mar 2015 20:20:56 +0000
Subject: [PATCH] stuff changed probably
---
src/utils.c | 65 +++++++++++++++++++++++++++++++-
1 files changed, 62 insertions(+), 3 deletions(-)
diff --git a/src/utils.c b/src/utils.c
index 2635494..bc39cec 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -2,11 +2,39 @@
#include <stdlib.h>
#include <string.h>
#include <math.h>
+#include <unistd.h>
#include <float.h>
#include <limits.h>
#include "utils.h"
+
+char *basecfg(char *cfgfile)
+{
+ char *c = cfgfile;
+ char *next;
+ while((next = strchr(c, '/')))
+ {
+ c = next+1;
+ }
+ c = copy_string(c);
+ next = strchr(c, '_');
+ if (next) *next = 0;
+ next = strchr(c, '.');
+ if (next) *next = 0;
+ return c;
+}
+
+int alphanum_to_int(char c)
+{
+ return (c < 58) ? c - 48 : c-87;
+}
+char int_to_alphanum(int i)
+{
+ if (i == 36) return '.';
+ return (i < 10) ? i + 48 : i + 87;
+}
+
void pm(int M, int N, float *A)
{
int i,j;
@@ -148,6 +176,27 @@
return line;
}
+void read_all(int fd, char *buffer, size_t bytes)
+{
+ size_t n = 0;
+ while(n < bytes){
+ int next = read(fd, buffer + n, bytes-n);
+ if(next <= 0) error("read failed");
+ n += next;
+ }
+}
+
+void write_all(int fd, char *buffer, size_t bytes)
+{
+ size_t n = 0;
+ while(n < bytes){
+ size_t next = write(fd, buffer + n, bytes-n);
+ if(next <= 0) error("write failed");
+ n += next;
+ }
+}
+
+
char *copy_string(char *s)
{
char *copy = malloc(strlen(s)+1);
@@ -227,10 +276,10 @@
return variance;
}
-float constrain(float a, float max)
+float constrain(float min, float max, float a)
{
- if(a > abs(max)) return abs(max);
- if(a < -abs(max)) return -abs(max);
+ if (a < min) return min;
+ if (a > max) return max;
return a;
}
@@ -262,6 +311,16 @@
}
}
+float mag_array(float *a, int n)
+{
+ int i;
+ float sum = 0;
+ for(i = 0; i < n; ++i){
+ sum += a[i]*a[i];
+ }
+ return sqrt(sum);
+}
+
void scale_array(float *a, int n, float s)
{
int i;
--
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