reifydb_routine/function/math/
power.rs

1// SPDX-License-Identifier: Apache-2.0
2// Copyright (c) 2025 ReifyDB
3
4use num_traits::ToPrimitive;
5use reifydb_core::value::column::{ColumnWithName, buffer::ColumnBuffer, columns::Columns};
6use reifydb_type::{
7	fragment::Fragment,
8	value::{
9		container::number::NumberContainer,
10		decimal::Decimal,
11		int::Int,
12		r#type::{Type, input_types::InputTypes},
13		uint::Uint,
14	},
15};
16
17use crate::routine::{Function, FunctionKind, Routine, RoutineInfo, context::FunctionContext, error::RoutineError};
18
19pub struct Power {
20	info: RoutineInfo,
21}
22
23impl Default for Power {
24	fn default() -> Self {
25		Self::new()
26	}
27}
28
29impl Power {
30	pub fn new() -> Self {
31		Self {
32			info: RoutineInfo::new("math::power"),
33		}
34	}
35}
36
37fn convert_column_to_type(data: &ColumnBuffer, target: Type, row_count: usize) -> ColumnBuffer {
38	match target {
39		Type::Int1 => {
40			let mut result = Vec::with_capacity(row_count);
41			let mut bitvec = Vec::with_capacity(row_count);
42			for i in 0..row_count {
43				if data.is_defined(i) {
44					result.push(get_as_i8(data, i));
45					bitvec.push(true);
46				} else {
47					result.push(0);
48					bitvec.push(false);
49				}
50			}
51			ColumnBuffer::int1_with_bitvec(result, bitvec)
52		}
53		Type::Int2 => {
54			let mut result = Vec::with_capacity(row_count);
55			let mut bitvec = Vec::with_capacity(row_count);
56			for i in 0..row_count {
57				if data.is_defined(i) {
58					result.push(get_as_i16(data, i));
59					bitvec.push(true);
60				} else {
61					result.push(0);
62					bitvec.push(false);
63				}
64			}
65			ColumnBuffer::int2_with_bitvec(result, bitvec)
66		}
67		Type::Int4 => {
68			let mut result = Vec::with_capacity(row_count);
69			let mut bitvec = Vec::with_capacity(row_count);
70			for i in 0..row_count {
71				if data.is_defined(i) {
72					result.push(get_as_i32(data, i));
73					bitvec.push(true);
74				} else {
75					result.push(0);
76					bitvec.push(false);
77				}
78			}
79			ColumnBuffer::int4_with_bitvec(result, bitvec)
80		}
81		Type::Int8 => {
82			let mut result = Vec::with_capacity(row_count);
83			let mut bitvec = Vec::with_capacity(row_count);
84			for i in 0..row_count {
85				if data.is_defined(i) {
86					result.push(get_as_i64(data, i));
87					bitvec.push(true);
88				} else {
89					result.push(0);
90					bitvec.push(false);
91				}
92			}
93			ColumnBuffer::int8_with_bitvec(result, bitvec)
94		}
95		Type::Int16 => {
96			let mut result = Vec::with_capacity(row_count);
97			let mut bitvec = Vec::with_capacity(row_count);
98			for i in 0..row_count {
99				if data.is_defined(i) {
100					result.push(get_as_i128(data, i));
101					bitvec.push(true);
102				} else {
103					result.push(0);
104					bitvec.push(false);
105				}
106			}
107			ColumnBuffer::int16_with_bitvec(result, bitvec)
108		}
109		Type::Uint1 => {
110			let mut result = Vec::with_capacity(row_count);
111			let mut bitvec = Vec::with_capacity(row_count);
112			for i in 0..row_count {
113				if data.is_defined(i) {
114					result.push(get_as_u8(data, i));
115					bitvec.push(true);
116				} else {
117					result.push(0);
118					bitvec.push(false);
119				}
120			}
121			ColumnBuffer::uint1_with_bitvec(result, bitvec)
122		}
123		Type::Uint2 => {
124			let mut result = Vec::with_capacity(row_count);
125			let mut bitvec = Vec::with_capacity(row_count);
126			for i in 0..row_count {
127				if data.is_defined(i) {
128					result.push(get_as_u16(data, i));
129					bitvec.push(true);
130				} else {
131					result.push(0);
132					bitvec.push(false);
133				}
134			}
135			ColumnBuffer::uint2_with_bitvec(result, bitvec)
136		}
137		Type::Uint4 => {
138			let mut result = Vec::with_capacity(row_count);
139			let mut bitvec = Vec::with_capacity(row_count);
140			for i in 0..row_count {
141				if data.is_defined(i) {
142					result.push(get_as_u32(data, i));
143					bitvec.push(true);
144				} else {
145					result.push(0);
146					bitvec.push(false);
147				}
148			}
149			ColumnBuffer::uint4_with_bitvec(result, bitvec)
150		}
151		Type::Uint8 => {
152			let mut result = Vec::with_capacity(row_count);
153			let mut bitvec = Vec::with_capacity(row_count);
154			for i in 0..row_count {
155				if data.is_defined(i) {
156					result.push(get_as_u64(data, i));
157					bitvec.push(true);
158				} else {
159					result.push(0);
160					bitvec.push(false);
161				}
162			}
163			ColumnBuffer::uint8_with_bitvec(result, bitvec)
164		}
165		Type::Uint16 => {
166			let mut result = Vec::with_capacity(row_count);
167			let mut bitvec = Vec::with_capacity(row_count);
168			for i in 0..row_count {
169				if data.is_defined(i) {
170					result.push(get_as_u128(data, i));
171					bitvec.push(true);
172				} else {
173					result.push(0);
174					bitvec.push(false);
175				}
176			}
177			ColumnBuffer::uint16_with_bitvec(result, bitvec)
178		}
179		Type::Float4 => {
180			let mut result = Vec::with_capacity(row_count);
181			let mut bitvec = Vec::with_capacity(row_count);
182			for i in 0..row_count {
183				if data.is_defined(i) {
184					result.push(get_as_f32(data, i));
185					bitvec.push(true);
186				} else {
187					result.push(0.0);
188					bitvec.push(false);
189				}
190			}
191			ColumnBuffer::float4_with_bitvec(result, bitvec)
192		}
193		Type::Float8 => {
194			let mut result = Vec::with_capacity(row_count);
195			let mut bitvec = Vec::with_capacity(row_count);
196			for i in 0..row_count {
197				if data.is_defined(i) {
198					result.push(get_as_f64(data, i));
199					bitvec.push(true);
200				} else {
201					result.push(0.0);
202					bitvec.push(false);
203				}
204			}
205			ColumnBuffer::float8_with_bitvec(result, bitvec)
206		}
207		Type::Int => {
208			let mut result = Vec::with_capacity(row_count);
209			let mut bitvec = Vec::with_capacity(row_count);
210			for i in 0..row_count {
211				if data.is_defined(i) {
212					result.push(Int::from(get_as_i128(data, i)));
213					bitvec.push(true);
214				} else {
215					result.push(Int::default());
216					bitvec.push(false);
217				}
218			}
219			ColumnBuffer::int_with_bitvec(result, bitvec)
220		}
221		Type::Uint => {
222			let mut result = Vec::with_capacity(row_count);
223			let mut bitvec = Vec::with_capacity(row_count);
224			for i in 0..row_count {
225				if data.is_defined(i) {
226					result.push(Uint::from(get_as_u128(data, i)));
227					bitvec.push(true);
228				} else {
229					result.push(Uint::default());
230					bitvec.push(false);
231				}
232			}
233			ColumnBuffer::uint_with_bitvec(result, bitvec)
234		}
235		Type::Decimal => {
236			let mut result = Vec::with_capacity(row_count);
237			let mut bitvec = Vec::with_capacity(row_count);
238			for i in 0..row_count {
239				if data.is_defined(i) {
240					result.push(Decimal::from(get_as_f64(data, i)));
241					bitvec.push(true);
242				} else {
243					result.push(Decimal::default());
244					bitvec.push(false);
245				}
246			}
247			ColumnBuffer::decimal_with_bitvec(result, bitvec)
248		}
249		_ => data.clone(),
250	}
251}
252
253fn get_as_i8(data: &ColumnBuffer, i: usize) -> i8 {
254	match data {
255		ColumnBuffer::Int1(c) => c.get(i).copied().unwrap_or(0),
256		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as i8).unwrap_or(0),
257		_ => 0,
258	}
259}
260
261fn get_as_u8(data: &ColumnBuffer, i: usize) -> u8 {
262	match data {
263		ColumnBuffer::Uint1(c) => c.get(i).copied().unwrap_or(0),
264		ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as u8).unwrap_or(0),
265		_ => 0,
266	}
267}
268
269fn get_as_i16(data: &ColumnBuffer, i: usize) -> i16 {
270	match data {
271		ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as i16).unwrap_or(0),
272		ColumnBuffer::Int2(c) => c.get(i).copied().unwrap_or(0),
273		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as i16).unwrap_or(0),
274		_ => 0,
275	}
276}
277
278fn get_as_i32(data: &ColumnBuffer, i: usize) -> i32 {
279	match data {
280		ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as i32).unwrap_or(0),
281		ColumnBuffer::Int2(c) => c.get(i).map(|&v| v as i32).unwrap_or(0),
282		ColumnBuffer::Int4(c) => c.get(i).copied().unwrap_or(0),
283		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as i32).unwrap_or(0),
284		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as i32).unwrap_or(0),
285		_ => 0,
286	}
287}
288
289fn get_as_i64(data: &ColumnBuffer, i: usize) -> i64 {
290	match data {
291		ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as i64).unwrap_or(0),
292		ColumnBuffer::Int2(c) => c.get(i).map(|&v| v as i64).unwrap_or(0),
293		ColumnBuffer::Int4(c) => c.get(i).map(|&v| v as i64).unwrap_or(0),
294		ColumnBuffer::Int8(c) => c.get(i).copied().unwrap_or(0),
295		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as i64).unwrap_or(0),
296		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as i64).unwrap_or(0),
297		ColumnBuffer::Uint4(c) => c.get(i).map(|&v| v as i64).unwrap_or(0),
298		_ => 0,
299	}
300}
301
302fn get_as_i128(data: &ColumnBuffer, i: usize) -> i128 {
303	match data {
304		ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
305		ColumnBuffer::Int2(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
306		ColumnBuffer::Int4(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
307		ColumnBuffer::Int8(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
308		ColumnBuffer::Int16(c) => c.get(i).copied().unwrap_or(0),
309		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
310		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
311		ColumnBuffer::Uint4(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
312		ColumnBuffer::Uint8(c) => c.get(i).map(|&v| v as i128).unwrap_or(0),
313		_ => 0,
314	}
315}
316
317fn get_as_u16(data: &ColumnBuffer, i: usize) -> u16 {
318	match data {
319		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as u16).unwrap_or(0),
320		ColumnBuffer::Uint2(c) => c.get(i).copied().unwrap_or(0),
321		_ => 0,
322	}
323}
324
325fn get_as_u32(data: &ColumnBuffer, i: usize) -> u32 {
326	match data {
327		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as u32).unwrap_or(0),
328		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as u32).unwrap_or(0),
329		ColumnBuffer::Uint4(c) => c.get(i).copied().unwrap_or(0),
330		_ => 0,
331	}
332}
333
334fn get_as_u64(data: &ColumnBuffer, i: usize) -> u64 {
335	match data {
336		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as u64).unwrap_or(0),
337		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as u64).unwrap_or(0),
338		ColumnBuffer::Uint4(c) => c.get(i).map(|&v| v as u64).unwrap_or(0),
339		ColumnBuffer::Uint8(c) => c.get(i).copied().unwrap_or(0),
340		_ => 0,
341	}
342}
343
344fn get_as_u128(data: &ColumnBuffer, i: usize) -> u128 {
345	match data {
346		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as u128).unwrap_or(0),
347		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as u128).unwrap_or(0),
348		ColumnBuffer::Uint4(c) => c.get(i).map(|&v| v as u128).unwrap_or(0),
349		ColumnBuffer::Uint8(c) => c.get(i).map(|&v| v as u128).unwrap_or(0),
350		ColumnBuffer::Uint16(c) => c.get(i).copied().unwrap_or(0),
351		_ => 0,
352	}
353}
354
355fn get_as_f32(data: &ColumnBuffer, i: usize) -> f32 {
356	match data {
357		ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
358		ColumnBuffer::Int2(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
359		ColumnBuffer::Int4(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
360		ColumnBuffer::Int8(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
361		ColumnBuffer::Int16(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
362		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
363		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
364		ColumnBuffer::Uint4(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
365		ColumnBuffer::Uint8(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
366		ColumnBuffer::Uint16(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
367		ColumnBuffer::Float4(c) => c.get(i).copied().unwrap_or(0.0),
368		ColumnBuffer::Float8(c) => c.get(i).map(|&v| v as f32).unwrap_or(0.0),
369		ColumnBuffer::Int {
370			container,
371			..
372		} => container.get(i).map(|v| v.0.to_f32().unwrap_or(0.0)).unwrap_or(0.0),
373		ColumnBuffer::Uint {
374			container,
375			..
376		} => container.get(i).map(|v| v.0.to_f32().unwrap_or(0.0)).unwrap_or(0.0),
377		ColumnBuffer::Decimal {
378			container,
379			..
380		} => container.get(i).map(|v| v.0.to_f32().unwrap_or(0.0)).unwrap_or(0.0),
381		_ => 0.0,
382	}
383}
384
385fn get_as_f64(data: &ColumnBuffer, i: usize) -> f64 {
386	match data {
387		ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
388		ColumnBuffer::Int2(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
389		ColumnBuffer::Int4(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
390		ColumnBuffer::Int8(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
391		ColumnBuffer::Int16(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
392		ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
393		ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
394		ColumnBuffer::Uint4(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
395		ColumnBuffer::Uint8(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
396		ColumnBuffer::Uint16(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
397		ColumnBuffer::Float4(c) => c.get(i).map(|&v| v as f64).unwrap_or(0.0),
398		ColumnBuffer::Float8(c) => c.get(i).copied().unwrap_or(0.0),
399		ColumnBuffer::Int {
400			container,
401			..
402		} => container.get(i).map(|v| v.0.to_f64().unwrap_or(0.0)).unwrap_or(0.0),
403		ColumnBuffer::Uint {
404			container,
405			..
406		} => container.get(i).map(|v| v.0.to_f64().unwrap_or(0.0)).unwrap_or(0.0),
407		ColumnBuffer::Decimal {
408			container,
409			..
410		} => container.get(i).map(|v| v.0.to_f64().unwrap_or(0.0)).unwrap_or(0.0),
411		_ => 0.0,
412	}
413}
414
415fn promote_two(left: Type, right: Type) -> Type {
416	// Known-side-wins symmetric: (X, Any) and (Any, X) yield X when X is numeric;
417	// (Any, Any) yields Any. Runs BEFORE canonicalization so `power(Int, none)`
418	// preserves `Int` rather than falling into the Int→Int16 overflow-guard
419	// branch (no value exists to overflow when the exponent is null).
420	if matches!(left, Type::Any) && matches!(right, Type::Any) {
421		return Type::Any;
422	}
423	if matches!(left, Type::Any) && right.is_number() {
424		return right;
425	}
426	if left.is_number() && matches!(right, Type::Any) {
427		return left;
428	}
429	if matches!(left, Type::Float4 | Type::Float8 | Type::Decimal)
430		|| matches!(right, Type::Float4 | Type::Float8 | Type::Decimal)
431	{
432		return Type::Decimal;
433	}
434	if left == Type::Int || right == Type::Int {
435		return Type::Int16;
436	}
437	if left == Type::Uint || right == Type::Uint {
438		if matches!(left, Type::Int1 | Type::Int2 | Type::Int4 | Type::Int8 | Type::Int16)
439			|| matches!(right, Type::Int1 | Type::Int2 | Type::Int4 | Type::Int8 | Type::Int16)
440		{
441			return Type::Int16;
442		}
443		return Type::Uint16;
444	}
445	Type::promote(left, right)
446}
447
448impl<'a> Routine<FunctionContext<'a>> for Power {
449	fn info(&self) -> &RoutineInfo {
450		&self.info
451	}
452
453	fn return_type(&self, input_types: &[Type]) -> Type {
454		if input_types.len() >= 2 {
455			promote_two(input_types[0].clone(), input_types[1].clone())
456		} else {
457			Type::Float8
458		}
459	}
460
461	fn execute(&self, ctx: &mut FunctionContext<'a>, args: &Columns) -> Result<Columns, RoutineError> {
462		if args.len() != 2 {
463			return Err(RoutineError::FunctionArityMismatch {
464				function: ctx.fragment.clone(),
465				expected: 2,
466				actual: args.len(),
467			});
468		}
469
470		let base_column = &args[0];
471		let exponent_column = &args[1];
472
473		let (base_data, base_bv) = base_column.unwrap_option();
474		let (exp_data, exp_bv) = exponent_column.unwrap_option();
475		let row_count = base_data.len();
476
477		let result_data = match (base_data, exp_data) {
478			(ColumnBuffer::Int1(base), ColumnBuffer::Int1(exp)) => {
479				let mut result = Vec::with_capacity(row_count);
480				let mut res_bitvec = Vec::with_capacity(row_count);
481				for i in 0..row_count {
482					match (base.get(i), exp.get(i)) {
483						(Some(&b), Some(&e)) => {
484							result.push(if e < 0 {
485								0
486							} else {
487								(b as i32).pow(e as u32)
488							});
489							res_bitvec.push(true);
490						}
491						_ => {
492							result.push(0);
493							res_bitvec.push(false);
494						}
495					}
496				}
497				ColumnBuffer::int4_with_bitvec(result, res_bitvec)
498			}
499			(ColumnBuffer::Int2(base), ColumnBuffer::Int2(exp)) => {
500				let mut result = Vec::with_capacity(row_count);
501				let mut res_bitvec = Vec::with_capacity(row_count);
502				for i in 0..row_count {
503					match (base.get(i), exp.get(i)) {
504						(Some(&b), Some(&e)) => {
505							result.push(if e < 0 {
506								0
507							} else {
508								(b as i32).pow(e as u32)
509							});
510							res_bitvec.push(true);
511						}
512						_ => {
513							result.push(0);
514							res_bitvec.push(false);
515						}
516					}
517				}
518				ColumnBuffer::int4_with_bitvec(result, res_bitvec)
519			}
520			(ColumnBuffer::Int4(base), ColumnBuffer::Int4(exp)) => {
521				let mut result = Vec::with_capacity(row_count);
522				let mut res_bitvec = Vec::with_capacity(row_count);
523				for i in 0..row_count {
524					match (base.get(i), exp.get(i)) {
525						(Some(&b), Some(&e)) => {
526							result.push(if e < 0 {
527								0
528							} else {
529								b.saturating_pow(e as u32)
530							});
531							res_bitvec.push(true);
532						}
533						_ => {
534							result.push(0);
535							res_bitvec.push(false);
536						}
537					}
538				}
539				ColumnBuffer::int4_with_bitvec(result, res_bitvec)
540			}
541			(ColumnBuffer::Int8(base), ColumnBuffer::Int8(exp)) => {
542				let mut result = Vec::with_capacity(row_count);
543				let mut res_bitvec = Vec::with_capacity(row_count);
544				for i in 0..row_count {
545					match (base.get(i), exp.get(i)) {
546						(Some(&b), Some(&e)) => {
547							result.push(if e < 0 {
548								0
549							} else {
550								b.saturating_pow(e as u32)
551							});
552							res_bitvec.push(true);
553						}
554						_ => {
555							result.push(0);
556							res_bitvec.push(false);
557						}
558					}
559				}
560				ColumnBuffer::int8_with_bitvec(result, res_bitvec)
561			}
562			(ColumnBuffer::Int16(base), ColumnBuffer::Int16(exp)) => {
563				let mut result = Vec::with_capacity(row_count);
564				let mut res_bitvec = Vec::with_capacity(row_count);
565				for i in 0..row_count {
566					match (base.get(i), exp.get(i)) {
567						(Some(&b), Some(&e)) => {
568							result.push(if e < 0 {
569								0
570							} else {
571								b.saturating_pow(e as u32)
572							});
573							res_bitvec.push(true);
574						}
575						_ => {
576							result.push(0);
577							res_bitvec.push(false);
578						}
579					}
580				}
581				ColumnBuffer::int16_with_bitvec(result, res_bitvec)
582			}
583			(ColumnBuffer::Float4(base), ColumnBuffer::Float4(exp)) => {
584				let mut result = Vec::with_capacity(row_count);
585				let mut res_bitvec = Vec::with_capacity(row_count);
586				for i in 0..row_count {
587					match (base.get(i), exp.get(i)) {
588						(Some(&b), Some(&e)) => {
589							result.push(b.powf(e));
590							res_bitvec.push(true);
591						}
592						_ => {
593							result.push(0.0);
594							res_bitvec.push(false);
595						}
596					}
597				}
598				ColumnBuffer::float4_with_bitvec(result, res_bitvec)
599			}
600			(ColumnBuffer::Float8(base), ColumnBuffer::Float8(exp)) => {
601				let mut result = Vec::with_capacity(row_count);
602				let mut res_bitvec = Vec::with_capacity(row_count);
603				for i in 0..row_count {
604					match (base.get(i), exp.get(i)) {
605						(Some(&b), Some(&e)) => {
606							result.push(b.powf(e));
607							res_bitvec.push(true);
608						}
609						_ => {
610							result.push(0.0);
611							res_bitvec.push(false);
612						}
613					}
614				}
615				ColumnBuffer::float8_with_bitvec(result, res_bitvec)
616			}
617			(ColumnBuffer::Uint1(base), ColumnBuffer::Uint1(exp)) => {
618				let mut result = Vec::with_capacity(row_count);
619				let mut res_bitvec = Vec::with_capacity(row_count);
620				for i in 0..row_count {
621					match (base.get(i), exp.get(i)) {
622						(Some(&b), Some(&e)) => {
623							result.push((b as u32).saturating_pow(e as u32));
624							res_bitvec.push(true);
625						}
626						_ => {
627							result.push(0);
628							res_bitvec.push(false);
629						}
630					}
631				}
632				ColumnBuffer::uint4_with_bitvec(result, res_bitvec)
633			}
634			(ColumnBuffer::Uint2(base), ColumnBuffer::Uint2(exp)) => {
635				let mut result = Vec::with_capacity(row_count);
636				let mut res_bitvec = Vec::with_capacity(row_count);
637				for i in 0..row_count {
638					match (base.get(i), exp.get(i)) {
639						(Some(&b), Some(&e)) => {
640							result.push((b as u32).saturating_pow(e as u32));
641							res_bitvec.push(true);
642						}
643						_ => {
644							result.push(0);
645							res_bitvec.push(false);
646						}
647					}
648				}
649				ColumnBuffer::uint4_with_bitvec(result, res_bitvec)
650			}
651			(ColumnBuffer::Uint4(base), ColumnBuffer::Uint4(exp)) => {
652				let mut result = Vec::with_capacity(row_count);
653				let mut res_bitvec = Vec::with_capacity(row_count);
654				for i in 0..row_count {
655					match (base.get(i), exp.get(i)) {
656						(Some(&b), Some(&e)) => {
657							result.push(b.saturating_pow(e));
658							res_bitvec.push(true);
659						}
660						_ => {
661							result.push(0);
662							res_bitvec.push(false);
663						}
664					}
665				}
666				ColumnBuffer::uint4_with_bitvec(result, res_bitvec)
667			}
668			(ColumnBuffer::Uint8(base), ColumnBuffer::Uint8(exp)) => {
669				let mut result = Vec::with_capacity(row_count);
670				let mut res_bitvec = Vec::with_capacity(row_count);
671				for i in 0..row_count {
672					match (base.get(i), exp.get(i)) {
673						(Some(&b), Some(&e)) => {
674							result.push(b.saturating_pow(e as u32));
675							res_bitvec.push(true);
676						}
677						_ => {
678							result.push(0);
679							res_bitvec.push(false);
680						}
681					}
682				}
683				ColumnBuffer::uint8_with_bitvec(result, res_bitvec)
684			}
685			(ColumnBuffer::Uint16(base), ColumnBuffer::Uint16(exp)) => {
686				let mut result = Vec::with_capacity(row_count);
687				let mut res_bitvec = Vec::with_capacity(row_count);
688				for i in 0..row_count {
689					match (base.get(i), exp.get(i)) {
690						(Some(&b), Some(&e)) => {
691							result.push(b.saturating_pow(e as u32));
692							res_bitvec.push(true);
693						}
694						_ => {
695							result.push(0);
696							res_bitvec.push(false);
697						}
698					}
699				}
700				ColumnBuffer::uint16_with_bitvec(result, res_bitvec)
701			}
702			(
703				ColumnBuffer::Int {
704					container: base,
705					max_bytes,
706				},
707				ColumnBuffer::Int {
708					container: exp,
709					..
710				},
711			) => {
712				let mut result = Vec::with_capacity(row_count);
713				let mut res_bitvec = Vec::with_capacity(row_count);
714				for i in 0..row_count {
715					match (base.get(i), exp.get(i)) {
716						(Some(b), Some(e)) => {
717							let b_val = b.0.to_f64().unwrap_or(0.0);
718							let e_val = e.0.to_f64().unwrap_or(0.0);
719							result.push(Int::from(b_val.powf(e_val) as i64));
720							res_bitvec.push(true);
721						}
722						_ => {
723							result.push(Int::default());
724							res_bitvec.push(false);
725						}
726					}
727				}
728				ColumnBuffer::Int {
729					container: NumberContainer::new(result),
730					max_bytes: *max_bytes,
731				}
732			}
733			(
734				ColumnBuffer::Uint {
735					container: base,
736					max_bytes,
737				},
738				ColumnBuffer::Uint {
739					container: exp,
740					..
741				},
742			) => {
743				let mut result = Vec::with_capacity(row_count);
744				let mut res_bitvec = Vec::with_capacity(row_count);
745				for i in 0..row_count {
746					match (base.get(i), exp.get(i)) {
747						(Some(b), Some(e)) => {
748							let b_val = b.0.to_f64().unwrap_or(0.0);
749							let e_val = e.0.to_f64().unwrap_or(0.0);
750							result.push(Uint::from(b_val.powf(e_val) as u64));
751							res_bitvec.push(true);
752						}
753						_ => {
754							result.push(Uint::default());
755							res_bitvec.push(false);
756						}
757					}
758				}
759				ColumnBuffer::Uint {
760					container: NumberContainer::new(result),
761					max_bytes: *max_bytes,
762				}
763			}
764			(
765				ColumnBuffer::Decimal {
766					container: base,
767					precision,
768					scale,
769				},
770				ColumnBuffer::Decimal {
771					container: exp,
772					..
773				},
774			) => {
775				let mut result = Vec::with_capacity(row_count);
776				let mut res_bitvec = Vec::with_capacity(row_count);
777				for i in 0..row_count {
778					match (base.get(i), exp.get(i)) {
779						(Some(b), Some(e)) => {
780							let b_val = b.0.to_f64().unwrap_or(0.0);
781							let e_val = e.0.to_f64().unwrap_or(0.0);
782							result.push(Decimal::from(b_val.powf(e_val)));
783							res_bitvec.push(true);
784						}
785						_ => {
786							result.push(Decimal::default());
787							res_bitvec.push(false);
788						}
789					}
790				}
791				ColumnBuffer::Decimal {
792					container: NumberContainer::new(result),
793					precision: *precision,
794					scale: *scale,
795				}
796			}
797			// Mixed-type case: promote both columns to a common type and recurse
798			_ => {
799				let base_type = base_data.get_type();
800				let exp_type = exp_data.get_type();
801
802				if !base_type.is_number() || !exp_type.is_number() {
803					return Err(RoutineError::FunctionInvalidArgumentType {
804						function: ctx.fragment.clone(),
805						argument_index: 0,
806						expected: InputTypes::numeric().expected_at(0).to_vec(),
807						actual: base_type,
808					});
809				}
810
811				let promoted_type = promote_two(base_type, exp_type);
812				let promoted_base = convert_column_to_type(base_data, promoted_type.clone(), row_count);
813				let promoted_exp = convert_column_to_type(exp_data, promoted_type, row_count);
814
815				let base_col = ColumnWithName::new(Fragment::internal("base"), promoted_base);
816				let exp_col = ColumnWithName::new(Fragment::internal("exp"), promoted_exp);
817				let promoted_columns = Columns::new(vec![base_col, exp_col]);
818
819				return self.call(ctx, &promoted_columns);
820			}
821		};
822
823		let combined_bitvec = match (base_bv, exp_bv) {
824			(Some(b), Some(e)) => Some(b.and(e)),
825			(Some(b), None) => Some(b.clone()),
826			(None, Some(e)) => Some(e.clone()),
827			(None, None) => None,
828		};
829
830		let final_data = if let Some(bv) = combined_bitvec {
831			ColumnBuffer::Option {
832				inner: Box::new(result_data),
833				bitvec: bv,
834			}
835		} else {
836			result_data
837		};
838
839		Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), final_data)]))
840	}
841}
842
843impl Function for Power {
844	fn kinds(&self) -> &[FunctionKind] {
845		&[FunctionKind::Scalar]
846	}
847}
reifydb_routine/function/math/power.rs

reifydb_routine/function/math/
power.rs
