Not able to compile in macOS and it's possible solution

[ssuhung]

Problem

The code can't compile in my environment

• Hardware: Macbook Air (M1, 2020)
• OS: macOS 12.6.2

Reason

Probably because macOS doesn't use glibc, and there seemed to be no way to install it in macOS, so #include <ieee754.h> will fail.

Possible Solution

Replace the rand01 function in mnist_util.h with this

  double rand01() {
    /* Compute next state.  */
    next();
    /* Construct a positive double with the 48 random bits distributed over
       its fractional part so the resulting FP number is [0.0,1.0).  */
    uint64_t mantissa = x << 4;
    double temp = 0.0;

    for(int i = 1; i <= 52; i++){
      if((mantissa >> (52 - i)) & 1){
        temp += pow(2, -i);
      }
    }
    
    /* Please note the lower 4 bits of mantissa1 are always 0.  */
    return temp;
  }

and remove the line

#include <ieee754.h>

Hopefully, this solves the problem.
I tested it with the command ./exe/mnist_cpu_base --train-data-size 1 --test-data-size 0, and the result numbers are the same as in the demo.