417 lines
18 KiB
C
417 lines
18 KiB
C
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/*
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* This file is part of the micropython-ulab project,
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*
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* https://github.com/v923z/micropython-ulab
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020-2021 Zoltán Vörös
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* 2020 Jeff Epler for Adafruit Industries
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*/
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include "py/obj.h"
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#include "py/runtime.h"
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#include "py/misc.h"
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#include "../../ulab.h"
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#include "../../ndarray_operators.h"
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#include "../../ulab_tools.h"
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#include "compare.h"
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static mp_obj_t compare_function(mp_obj_t x1, mp_obj_t x2, uint8_t op) {
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ndarray_obj_t *lhs = ndarray_from_mp_obj(x1, 0);
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ndarray_obj_t *rhs = ndarray_from_mp_obj(x2, 0);
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uint8_t ndim = 0;
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size_t *shape = m_new(size_t, ULAB_MAX_DIMS);
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int32_t *lstrides = m_new(int32_t, ULAB_MAX_DIMS);
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int32_t *rstrides = m_new(int32_t, ULAB_MAX_DIMS);
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if(!ndarray_can_broadcast(lhs, rhs, &ndim, shape, lstrides, rstrides)) {
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mp_raise_ValueError(translate("operands could not be broadcast together"));
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m_del(size_t, shape, ULAB_MAX_DIMS);
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m_del(int32_t, lstrides, ULAB_MAX_DIMS);
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m_del(int32_t, rstrides, ULAB_MAX_DIMS);
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}
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uint8_t *larray = (uint8_t *)lhs->array;
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uint8_t *rarray = (uint8_t *)rhs->array;
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if(op == COMPARE_EQUAL) {
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return ndarray_binary_equality(lhs, rhs, ndim, shape, lstrides, rstrides, MP_BINARY_OP_EQUAL);
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} else if(op == COMPARE_NOT_EQUAL) {
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return ndarray_binary_equality(lhs, rhs, ndim, shape, lstrides, rstrides, MP_BINARY_OP_NOT_EQUAL);
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}
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// These are the upcasting rules
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// float always becomes float
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// operation on identical types preserves type
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// uint8 + int8 => int16
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// uint8 + int16 => int16
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// uint8 + uint16 => uint16
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// int8 + int16 => int16
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// int8 + uint16 => uint16
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// uint16 + int16 => float
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// The parameters of RUN_COMPARE_LOOP are
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// typecode of result, type_out, type_left, type_right, lhs operand, rhs operand, operator
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if(lhs->dtype == NDARRAY_UINT8) {
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if(rhs->dtype == NDARRAY_UINT8) {
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RUN_COMPARE_LOOP(NDARRAY_UINT8, uint8_t, uint8_t, uint8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT8) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, uint8_t, int8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_UINT16) {
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RUN_COMPARE_LOOP(NDARRAY_UINT16, uint16_t, uint8_t, uint16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT16) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, uint8_t, int16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_FLOAT) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, uint8_t, mp_float_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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}
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} else if(lhs->dtype == NDARRAY_INT8) {
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if(rhs->dtype == NDARRAY_UINT8) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, int8_t, uint8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT8) {
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RUN_COMPARE_LOOP(NDARRAY_INT8, int8_t, int8_t, int8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_UINT16) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, int8_t, uint16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT16) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, int8_t, int16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_FLOAT) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, int8_t, mp_float_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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}
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} else if(lhs->dtype == NDARRAY_UINT16) {
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if(rhs->dtype == NDARRAY_UINT8) {
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RUN_COMPARE_LOOP(NDARRAY_UINT16, uint16_t, uint16_t, uint8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT8) {
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RUN_COMPARE_LOOP(NDARRAY_UINT16, uint16_t, uint16_t, int8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_UINT16) {
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RUN_COMPARE_LOOP(NDARRAY_UINT16, uint16_t, uint16_t, uint16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT16) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, uint16_t, int16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_FLOAT) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, uint8_t, mp_float_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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}
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} else if(lhs->dtype == NDARRAY_INT16) {
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if(rhs->dtype == NDARRAY_UINT8) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, int16_t, uint8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT8) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, int16_t, int8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_UINT16) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, int16_t, uint16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT16) {
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RUN_COMPARE_LOOP(NDARRAY_INT16, int16_t, int16_t, int16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_FLOAT) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, uint16_t, mp_float_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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}
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} else if(lhs->dtype == NDARRAY_FLOAT) {
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if(rhs->dtype == NDARRAY_UINT8) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, mp_float_t, uint8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT8) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, mp_float_t, int8_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_UINT16) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, mp_float_t, uint16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_INT16) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, mp_float_t, int16_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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} else if(rhs->dtype == NDARRAY_FLOAT) {
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RUN_COMPARE_LOOP(NDARRAY_FLOAT, mp_float_t, mp_float_t, mp_float_t, larray, lstrides, rarray, rstrides, ndim, shape, op);
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}
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}
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return mp_const_none; // we should never reach this point
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}
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static mp_obj_t compare_equal_helper(mp_obj_t x1, mp_obj_t x2, uint8_t comptype) {
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// scalar comparisons should return a single object of mp_obj_t type
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mp_obj_t result = compare_function(x1, x2, comptype);
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if((mp_obj_is_int(x1) || mp_obj_is_float(x1)) && (mp_obj_is_int(x2) || mp_obj_is_float(x2))) {
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mp_obj_iter_buf_t iter_buf;
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mp_obj_t iterable = mp_getiter(result, &iter_buf);
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mp_obj_t item = mp_iternext(iterable);
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return item;
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}
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return result;
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}
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#if ULAB_NUMPY_HAS_CLIP
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mp_obj_t compare_clip(mp_obj_t x1, mp_obj_t x2, mp_obj_t x3) {
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// Note: this function could be made faster by implementing a single-loop comparison in
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// RUN_COMPARE_LOOP. However, that would add around 2 kB of compile size, while we
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// would not gain a factor of two in speed, since the two comparisons should still be
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// evaluated. In contrast, calling the function twice adds only 140 bytes to the firmware
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if(mp_obj_is_int(x1) || mp_obj_is_float(x1)) {
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mp_float_t v1 = mp_obj_get_float(x1);
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mp_float_t v2 = mp_obj_get_float(x2);
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mp_float_t v3 = mp_obj_get_float(x3);
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if(v1 < v2) {
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return x2;
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} else if(v1 > v3) {
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return x3;
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} else {
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return x1;
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}
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} else { // assume ndarrays
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return compare_function(x2, compare_function(x1, x3, COMPARE_MINIMUM), COMPARE_MAXIMUM);
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}
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}
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MP_DEFINE_CONST_FUN_OBJ_3(compare_clip_obj, compare_clip);
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#endif
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#if ULAB_NUMPY_HAS_EQUAL
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mp_obj_t compare_equal(mp_obj_t x1, mp_obj_t x2) {
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return compare_equal_helper(x1, x2, COMPARE_EQUAL);
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}
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MP_DEFINE_CONST_FUN_OBJ_2(compare_equal_obj, compare_equal);
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#endif
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#if ULAB_NUMPY_HAS_NOTEQUAL
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mp_obj_t compare_not_equal(mp_obj_t x1, mp_obj_t x2) {
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return compare_equal_helper(x1, x2, COMPARE_NOT_EQUAL);
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}
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MP_DEFINE_CONST_FUN_OBJ_2(compare_not_equal_obj, compare_not_equal);
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#endif
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#if ULAB_NUMPY_HAS_ISFINITE | ULAB_NUMPY_HAS_ISINF
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static mp_obj_t compare_isinf_isfinite(mp_obj_t _x, uint8_t mask) {
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// mask should signify, whether the function is called from isinf (mask = 1),
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// or from isfinite (mask = 0)
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if(mp_obj_is_int(_x)) {
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if(mask) {
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return mp_const_false;
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} else {
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return mp_const_true;
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}
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} else if(mp_obj_is_float(_x)) {
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mp_float_t x = mp_obj_get_float(_x);
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if(isnan(x)) {
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return mp_const_false;
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}
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if(mask) { // called from isinf
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return isinf(x) ? mp_const_true : mp_const_false;
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} else { // called from isfinite
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return isinf(x) ? mp_const_false : mp_const_true;
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}
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} else if(mp_obj_is_type(_x, &ulab_ndarray_type)) {
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ndarray_obj_t *x = MP_OBJ_TO_PTR(_x);
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ndarray_obj_t *results = ndarray_new_dense_ndarray(x->ndim, x->shape, NDARRAY_BOOL);
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// At this point, results is all False
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uint8_t *rarray = (uint8_t *)results->array;
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if(x->dtype != NDARRAY_FLOAT) {
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// int types can never be infinite...
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if(!mask) {
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// ...so flip all values in the array, if the function was called from isfinite
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memset(rarray, 1, results->len);
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}
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return results;
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}
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uint8_t *xarray = (uint8_t *)x->array;
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#if ULAB_MAX_DIMS > 3
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size_t i = 0;
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do {
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#endif
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#if ULAB_MAX_DIMS > 2
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size_t j = 0;
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do {
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#endif
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#if ULAB_MAX_DIMS > 1
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size_t k = 0;
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do {
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#endif
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size_t l = 0;
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do {
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mp_float_t value = *(mp_float_t *)xarray;
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if(isnan(value)) {
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*rarray++ = 0;
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} else {
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*rarray++ = isinf(value) ? mask : 1 - mask;
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}
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xarray += x->strides[ULAB_MAX_DIMS - 1];
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l++;
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} while(l < x->shape[ULAB_MAX_DIMS - 1]);
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#if ULAB_MAX_DIMS > 1
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xarray -= x->strides[ULAB_MAX_DIMS - 1] * x->shape[ULAB_MAX_DIMS-1];
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xarray += x->strides[ULAB_MAX_DIMS - 2];
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k++;
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} while(k < x->shape[ULAB_MAX_DIMS - 2]);
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#endif
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#if ULAB_MAX_DIMS > 2
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xarray -= x->strides[ULAB_MAX_DIMS - 2] * x->shape[ULAB_MAX_DIMS-2];
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xarray += x->strides[ULAB_MAX_DIMS - 3];
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j++;
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} while(j < x->shape[ULAB_MAX_DIMS - 3]);
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#endif
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#if ULAB_MAX_DIMS > 3
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xarray -= x->strides[ULAB_MAX_DIMS - 3] * x->shape[ULAB_MAX_DIMS-3];
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xarray += x->strides[ULAB_MAX_DIMS - 4];
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i++;
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} while(i < x->shape[ULAB_MAX_DIMS - 4]);
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#endif
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return results;
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} else {
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mp_raise_TypeError(translate("wrong input type"));
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}
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return mp_const_none;
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}
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#endif
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#if ULAB_NUMPY_HAS_ISFINITE
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mp_obj_t compare_isfinite(mp_obj_t _x) {
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return compare_isinf_isfinite(_x, 0);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(compare_isfinite_obj, compare_isfinite);
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#endif
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#if ULAB_NUMPY_HAS_ISINF
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mp_obj_t compare_isinf(mp_obj_t _x) {
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return compare_isinf_isfinite(_x, 1);
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}
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MP_DEFINE_CONST_FUN_OBJ_1(compare_isinf_obj, compare_isinf);
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#endif
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#if ULAB_NUMPY_HAS_MAXIMUM
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mp_obj_t compare_maximum(mp_obj_t x1, mp_obj_t x2) {
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// extra round, so that we can return maximum(3, 4) properly
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mp_obj_t result = compare_function(x1, x2, COMPARE_MAXIMUM);
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if((mp_obj_is_int(x1) || mp_obj_is_float(x1)) && (mp_obj_is_int(x2) || mp_obj_is_float(x2))) {
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ndarray_obj_t *ndarray = MP_OBJ_TO_PTR(result);
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return mp_binary_get_val_array(ndarray->dtype, ndarray->array, 0);
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}
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return result;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(compare_maximum_obj, compare_maximum);
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#endif
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#if ULAB_NUMPY_HAS_MINIMUM
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mp_obj_t compare_minimum(mp_obj_t x1, mp_obj_t x2) {
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// extra round, so that we can return minimum(3, 4) properly
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mp_obj_t result = compare_function(x1, x2, COMPARE_MINIMUM);
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if((mp_obj_is_int(x1) || mp_obj_is_float(x1)) && (mp_obj_is_int(x2) || mp_obj_is_float(x2))) {
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ndarray_obj_t *ndarray = MP_OBJ_TO_PTR(result);
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return mp_binary_get_val_array(ndarray->dtype, ndarray->array, 0);
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}
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return result;
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}
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MP_DEFINE_CONST_FUN_OBJ_2(compare_minimum_obj, compare_minimum);
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#endif
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#if ULAB_NUMPY_HAS_WHERE
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mp_obj_t compare_where(mp_obj_t _condition, mp_obj_t _x, mp_obj_t _y) {
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// this implementation will work with ndarrays, and scalars only
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ndarray_obj_t *c = ndarray_from_mp_obj(_condition, 0);
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ndarray_obj_t *x = ndarray_from_mp_obj(_x, 0);
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ndarray_obj_t *y = ndarray_from_mp_obj(_y, 0);
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int32_t *cstrides = m_new(int32_t, ULAB_MAX_DIMS);
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int32_t *xstrides = m_new(int32_t, ULAB_MAX_DIMS);
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int32_t *ystrides = m_new(int32_t, ULAB_MAX_DIMS);
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size_t *oshape = m_new(size_t, ULAB_MAX_DIMS);
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uint8_t ndim;
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// establish the broadcasting conditions first
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// if any two of the arrays can be broadcast together, then
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// the three arrays can also be broadcast together
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if(!ndarray_can_broadcast(c, x, &ndim, oshape, cstrides, ystrides) ||
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!ndarray_can_broadcast(c, y, &ndim, oshape, cstrides, ystrides) ||
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!ndarray_can_broadcast(x, y, &ndim, oshape, xstrides, ystrides)) {
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mp_raise_ValueError(translate("operands could not be broadcast together"));
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}
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ndim = MAX(MAX(c->ndim, x->ndim), y->ndim);
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for(uint8_t i = 1; i <= ndim; i++) {
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cstrides[ULAB_MAX_DIMS - i] = c->shape[ULAB_MAX_DIMS - i] < 2 ? 0 : c->strides[ULAB_MAX_DIMS - i];
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xstrides[ULAB_MAX_DIMS - i] = x->shape[ULAB_MAX_DIMS - i] < 2 ? 0 : x->strides[ULAB_MAX_DIMS - i];
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ystrides[ULAB_MAX_DIMS - i] = y->shape[ULAB_MAX_DIMS - i] < 2 ? 0 : y->strides[ULAB_MAX_DIMS - i];
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oshape[ULAB_MAX_DIMS - i] = MAX(MAX(c->shape[ULAB_MAX_DIMS - i], x->shape[ULAB_MAX_DIMS - i]), y->shape[ULAB_MAX_DIMS - i]);
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}
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uint8_t out_dtype = ndarray_upcast_dtype(x->dtype, y->dtype);
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ndarray_obj_t *out = ndarray_new_dense_ndarray(ndim, oshape, out_dtype);
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mp_float_t (*cfunc)(void *) = ndarray_get_float_function(c->dtype);
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mp_float_t (*xfunc)(void *) = ndarray_get_float_function(x->dtype);
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mp_float_t (*yfunc)(void *) = ndarray_get_float_function(y->dtype);
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mp_float_t (*ofunc)(void *, mp_float_t ) = ndarray_set_float_function(out->dtype);
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uint8_t *oarray = (uint8_t *)out->array;
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uint8_t *carray = (uint8_t *)c->array;
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uint8_t *xarray = (uint8_t *)x->array;
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uint8_t *yarray = (uint8_t *)y->array;
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#if ULAB_MAX_DIMS > 3
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size_t i = 0;
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do {
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#endif
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#if ULAB_MAX_DIMS > 2
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size_t j = 0;
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do {
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#endif
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#if ULAB_MAX_DIMS > 1
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size_t k = 0;
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do {
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#endif
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size_t l = 0;
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do {
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mp_float_t value;
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mp_float_t cvalue = cfunc(carray);
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if(cvalue != MICROPY_FLOAT_CONST(0.0)) {
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value = xfunc(xarray);
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} else {
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value = yfunc(yarray);
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}
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ofunc(oarray, value);
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oarray += out->itemsize;
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carray += cstrides[ULAB_MAX_DIMS - 1];
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xarray += xstrides[ULAB_MAX_DIMS - 1];
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yarray += ystrides[ULAB_MAX_DIMS - 1];
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l++;
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} while(l < out->shape[ULAB_MAX_DIMS - 1]);
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#if ULAB_MAX_DIMS > 1
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carray -= cstrides[ULAB_MAX_DIMS - 1] * c->shape[ULAB_MAX_DIMS-1];
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carray += cstrides[ULAB_MAX_DIMS - 2];
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xarray -= xstrides[ULAB_MAX_DIMS - 1] * x->shape[ULAB_MAX_DIMS-1];
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xarray += xstrides[ULAB_MAX_DIMS - 2];
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yarray -= ystrides[ULAB_MAX_DIMS - 1] * y->shape[ULAB_MAX_DIMS-1];
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yarray += ystrides[ULAB_MAX_DIMS - 2];
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k++;
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} while(k < out->shape[ULAB_MAX_DIMS - 2]);
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#endif
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#if ULAB_MAX_DIMS > 2
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carray -= cstrides[ULAB_MAX_DIMS - 2] * c->shape[ULAB_MAX_DIMS-2];
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carray += cstrides[ULAB_MAX_DIMS - 3];
|
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xarray -= xstrides[ULAB_MAX_DIMS - 2] * x->shape[ULAB_MAX_DIMS-2];
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xarray += xstrides[ULAB_MAX_DIMS - 3];
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yarray -= ystrides[ULAB_MAX_DIMS - 2] * y->shape[ULAB_MAX_DIMS-2];
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yarray += ystrides[ULAB_MAX_DIMS - 3];
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j++;
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} while(j < out->shape[ULAB_MAX_DIMS - 3]);
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#endif
|
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#if ULAB_MAX_DIMS > 3
|
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carray -= cstrides[ULAB_MAX_DIMS - 3] * c->shape[ULAB_MAX_DIMS-3];
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carray += cstrides[ULAB_MAX_DIMS - 4];
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xarray -= xstrides[ULAB_MAX_DIMS - 3] * x->shape[ULAB_MAX_DIMS-3];
|
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xarray += xstrides[ULAB_MAX_DIMS - 4];
|
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yarray -= ystrides[ULAB_MAX_DIMS - 3] * y->shape[ULAB_MAX_DIMS-3];
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yarray += ystrides[ULAB_MAX_DIMS - 4];
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i++;
|
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} while(i < out->shape[ULAB_MAX_DIMS - 4]);
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#endif
|
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return MP_OBJ_FROM_PTR(out);
|
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}
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MP_DEFINE_CONST_FUN_OBJ_3(compare_where_obj, compare_where);
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#endif
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