floating.c
author Markus Bröker <mbroeker@largo.dyndns.tv>
Fri, 27 Dec 2013 16:00:09 +0100
changeset 167 7c6b221900bf
parent 77 49e0babccb23
permissions -rw-r--r--
Proper Datatypes to leave the 80's
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
0
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
     1
/**
77
49e0babccb23 HEADER TAGS
Markus Bröker <mbroeker@largo.dyndns.tv>
parents: 63
diff changeset
     2
 * floating.c
9
c3fecc82ade6 standard tags for git projects
Markus Bröker <mbroeker@largo.dyndns.tv>
parents: 8
diff changeset
     3
 * Copyright (C) 2008 Markus Broeker
0
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
     4
 */
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
     5
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
     6
#include <stdio.h>
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
     7
#include <stdlib.h>
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
     8
#include <math.h>
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
     9
63
5a82f89d607e uint vs size_t and two bugfixes in fak and unicode
Markus Bröker <mbroeker@largo.dyndns.tv>
parents: 29
diff changeset
    10
double *getValues (unsigned int elements)
0
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    11
{
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    12
    double *values;
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    13
    int i;
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    14
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    15
    if ((values = calloc (elements + 1, sizeof (double))) == NULL)
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    16
        return NULL;
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    17
    for (i = elements; i >= 0; i--)
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    18
        values[i] = cos (i);
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    19
    return values;
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    20
}
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    21
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    22
#define MAX 40
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    23
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    24
int main (int argc, char **argv)
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    25
{
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    26
    double *values = getValues (MAX);
27
81a574d60c15 typo in min2time format string
Markus Bröker <mbroeker@largo.dyndns.tv>
parents: 9
diff changeset
    27
63
5a82f89d607e uint vs size_t and two bugfixes in fak and unicode
Markus Bröker <mbroeker@largo.dyndns.tv>
parents: 29
diff changeset
    28
    unsigned int i;
0
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    29
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    30
    for (i = 0; i < MAX; i++) {
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    31
        if (fabs (cos (i) - values[i]) < 0.001)
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    32
            printf ("COS(%d) = %3.2g = %3.2g\n", i, values[i], cos (i));
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    33
    }
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    34
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    35
    if (values != NULL)
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    36
        free (values);
8
96d16dfe787a We use return EXIT_SUCCESS instead of return 0
Markus Bröker <mbroeker@largo.dyndns.tv>
parents: 0
diff changeset
    37
0
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    38
    return EXIT_SUCCESS;
af501b0c1716 demos cvs copy
Markus Bröker <mbroeker@largo.dyndns.tv>
parents:
diff changeset
    39
}