SKIP: FAILED

#version 310 es
precision mediump float;

vec4 x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f);
void main_1() {
  float f = 0.0f;
  f = atan(1.0f, tanh(1.0f));
  if (((f > 0.910000026f) & (f < 0.930000007f))) {
    x_GLF_color = vec4(1.0f, 0.0f, 0.0f, 1.0f);
  } else {
    x_GLF_color = vec4(0.0f, 0.0f, 0.0f, 0.0f);
  }
  return;
}

struct main_out {
  vec4 x_GLF_color_1;
};

struct tint_symbol_1 {
  vec4 x_GLF_color_1;
};

main_out tint_symbol_inner() {
  main_1();
  main_out tint_symbol_2 = main_out(x_GLF_color);
  return tint_symbol_2;
}

tint_symbol_1 tint_symbol() {
  main_out inner_result = tint_symbol_inner();
  tint_symbol_1 wrapper_result = tint_symbol_1(vec4(0.0f, 0.0f, 0.0f, 0.0f));
  wrapper_result.x_GLF_color_1 = inner_result.x_GLF_color_1;
  return wrapper_result;
}
layout(location = 0) out vec4 x_GLF_color_1;

void main() {
  tint_symbol_1 outputs;
  outputs = tint_symbol();
  x_GLF_color_1 = outputs.x_GLF_color_1;
}

Error parsing GLSL shader:
ERROR: 0:8: '&' :  wrong operand types: no operation '&' exists that takes a left-hand operand of type ' temp bool' and a right operand of type ' temp bool' (or there is no acceptable conversion)
ERROR: 0:8: '' : compilation terminated 
ERROR: 2 compilation errors.  No code generated.