fix isnan.

Author: b4rtaz

src/grok1-tasks-test.cpp

@@ -16,7 +16,7 @@ float expectedOutput_5012_5016[] = { 0.0126675405, 0.0169415697, 0.0183475353, 0
 
 void compare(float* a, float* b, int n) {
     for (int i = 0; i < n; i++) {
-        if (isnan(a[i]) || fabs(a[i] - b[i]) > 0.00001) { // Optimization may cause some differences
+        if (std::isnan(a[i]) || fabs(a[i] - b[i]) > 0.00001) { // Optimization may cause some differences
             printf("%.9g != %.9g\n", a[i], b[i]); i++;
             printf("%.9g != %.9g\n", a[i], b[i]); i++;
             printf("%.9g != %.9g\n", a[i], b[i]); i++;

src/llama2-tasks-test.cpp

@@ -591,7 +591,7 @@ int main() {
 
     int ix = -1;
     for (int i = 0; i < spec.dim; i++) {
-        if (isnan(x[i]) || fabs(x[i] - expectedOutput[i]) > 0.00001) { // Optimization may cause some differences
+        if (std::isnan(x[i]) || fabs(x[i] - expectedOutput[i]) > 0.00001) { // Optimization may cause some differences
             ix = i;
             break;
         }