Function hurray_descriptor_field_f64 

#[unsafe(no_mangle)]
pub unsafe extern "C" fn hurray_descriptor_field_f64(
    handle: *const HurrayDescriptor,
    field: HurrayDescriptorField,
    level: u32,
    out_value: *mut f64,
) -> HurrayStatus

Reads a real scalar field of the descriptor.

Covers per-tensor affine scale — a float32 on the wire, widened — and the six float64 statistics. A statistic whose computed_mask guard bit is clear returns HURRAY_ERR_FIELD_NOT_PRESENT rather than the stored placeholder, so a caller cannot read an uncomputed value by forgetting to test the mask.

Errors

As hurray_descriptor_field_u64, with HURRAY_ERR_FIELD_NOT_APPLICABLE for any field that is not a real scalar.

Safety

handle and out_value MUST be valid, non-null pointers, and handle MUST NOT have been destroyed.