Charles Tritt / Mbed 2 deprecated DivideByZero

Demonstrates that Nucleo represents divide by zero result as inf, not an error.

Dependencies:   mbed

Fork of ArrayLimits by Charles Tritt

main.cpp@2:68190b1e8bf3, 2017-10-12 (annotated)

Committer:
CSTritt
Date:
Thu Oct 12 20:40:08 2017 +0000
Revision:
2:68190b1e8bf3
Parent:
1:a000e0121191
Child:
3:f29617cd39a9
Initial version.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CSTritt 1:a000e0121191 1
CSTritt 1:a000e0121191 2 /*
CSTritt 1:a000e0121191 3 File: main.cpp
CSTritt 2:68190b1e8bf3 4 Project: DivideByZero
CSTritt 0:2f9e67d4c561 5
CSTritt 2:68190b1e8bf3 6 Demonstrates divide by zero on Nucleo boards. Result is inf, not an error.
CSTritt 2:68190b1e8bf3 7
CSTritt 2:68190b1e8bf3 8 Created by Dr. C. S. Tritt; Last revised 10/12/17 (v. 1.0)
CSTritt 1:a000e0121191 9 */
CSTritt 1:a000e0121191 10 #include "mbed.h"
CSTritt 0:2f9e67d4c561 11
CSTritt 0:2f9e67d4c561 12 int main()
CSTritt 0:2f9e67d4c561 13 {
CSTritt 2:68190b1e8bf3 14 printf("Hello World !\n\n");
CSTritt 1:a000e0121191 15
CSTritt 2:68190b1e8bf3 16 for (int i = 5; i >= -5; i--) { // Displays inf for 1/0.
CSTritt 2:68190b1e8bf3 17 float x = (float) i;
CSTritt 2:68190b1e8bf3 18 printf("x is %f and 1/x is %f.\n", x, 1/x);
CSTritt 1:a000e0121191 19 wait(0.5f);
CSTritt 0:2f9e67d4c561 20 }
CSTritt 1:a000e0121191 21
CSTritt 2:68190b1e8bf3 22 float x = 1.0f/0.0f; // Produces compile time warning.
CSTritt 2:68190b1e8bf3 23 // Prints three infs.
CSTritt 2:68190b1e8bf3 24 printf("\nx, x+1.0 & 2.0*x are: %f, %f, %f.\n", x, x+1.0f, 2.0f*x);
CSTritt 1:a000e0121191 25
CSTritt 1:a000e0121191 26 while (true) {}; // Just loop here forever after tests.
CSTritt 0:2f9e67d4c561 27 }