## "Fossies" - the Fresh Open Source Software Archive

### Member "ccmath-2.2.1/statf/test/tdnorm.c" (23 Nov 2000, 1612 Bytes) of package /linux/misc/old/ccmath-2.2.1.tar.gz:

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```    1 /*  tdnorm.c    CCMATH mathematics library source code.
2  *
4  *  This code may be redistributed under the terms of the GNU library
5  *  public license (LGPL). ( See the lgpl.license file for details.)
6  * ------------------------------------------------------------------------
7  */
8 /*
9     Test:  qnorm  pctn
10 */
11 #include "ccmath.h"
12 void main(void)
13 hlOpen(13,1);{ double z,dz,f,d;
14   printf("     Test of Normal Distribution\n");
15   printf("    z         Q(z)         Pct(Q)\n");
16   for(z= -2.5,dz=.25; z<2.6 ;z+=dz)hlOpen(16,2);{
17
18 /* compute distribution function for standard normal */
19     f=qnorm(z);
20
21 /* compute the percentage point to check the distribution */
22     d=pctn(f);
23
24     printf(" %6.2f  %12.8f  %12.8f\n",z,f,d);
25    hlClose(2, 25);}
26 hlClose(1, 26);}
27 /*  Test output
28
29      Test of Normal Distribution
30     z         Q(z)         Pct(Q)
31   -2.50    0.99379033   -2.50000000
32   -2.25    0.98777553   -2.25000000
33   -2.00    0.97724987   -2.00000000
34   -1.75    0.95994084   -1.75000000
35   -1.50    0.93319280   -1.50000000
36   -1.25    0.89435023   -1.25000000
37   -1.00    0.84134475   -1.00000000
38   -0.75    0.77337265   -0.75000000
39   -0.50    0.69146246   -0.50000000
40   -0.25    0.59870633   -0.25000000
41    0.00    0.50000000    0.00000000
42    0.25    0.40129367    0.25000000
43    0.50    0.30853754    0.50000000
44    0.75    0.22662735    0.75000000
45    1.00    0.15865525    1.00000000
46    1.25    0.10564977    1.25000000
47    1.50    0.06680720    1.50000000
48    1.75    0.04005916    1.75000000
49    2.00    0.02275013    2.00000000
50    2.25    0.01222447    2.25000000
51    2.50    0.00620967    2.50000000
52 */
```