Add delete_bins to C API

pineappl_capi/src/lib.rs

@@ -860,6 +860,27 @@ pub unsafe extern "C" fn pineappl_grid_merge_bins(grid: *mut Grid, from: usize,
     grid.merge_bins(from..to).unwrap();
 }
 
+/// Deletes bins with the corresponding `bin_indices`. Repeated indices and indices larger or
+/// equal the bin length are ignored.
+///
+/// # Safety
+///
+///  The parameter `grid` must be valid `Grid` object created by either `pineappl_grid_new` or
+///  `pineappl_grid_read`.
+///  The parameter `bin_indices_ptr` must be an array of size `bin_indices_len`.
+///
+/// # Panics
+///
+/// TODO
+#[no_mangle]
+pub unsafe extern "C" fn pineappl_grid_delete_bins(grid: *mut Grid, 
+                                                   bin_indices_ptr: *const usize, 
+                                                   bin_indices_len: usize) {
+    let grid = unsafe { &mut *grid };
+    let bin_indices = unsafe { std::slice::from_raw_parts(bin_indices_ptr, bin_indices_len) };
+    grid.delete_bins(bin_indices);
+}
+
 /// Merges `other` into `grid` and subsequently deletes `other`.
 ///
 /// # Safety