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Power function

Power function

Owned by Gabor Kertesz (Deactivated)

Feb 10, 2022

1 min read

The following program gives slightly different results on win/arm64 vs win/x86 and wsl/arm64.

This specific issue is found while running numpy test suite.

#include <stdio.h>
#include <math.h>

int main(){
   double x = 0.5;
   double y = 1022 + 52;
   double z = pow(x, y);
   printf("%.1024f\n",z);
}
Output:

win/arm64: 0.000...000
wsl/arm64: 0.000...903
win/x64  : 0.000...903

Compiler: 
Microsoft (R) C/C++ Optimizing Compiler Version 19.29.30038.1 for ARM64

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