| /* |
| * This file is part of the Micro Python project, http://micropython.org/ |
| * |
| * The MIT License (MIT) |
| * |
| * Copyright (c) 2013, 2014 Damien P. George |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| * THE SOFTWARE. |
| */ |
| |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <assert.h> |
| #include <math.h> |
| |
| #include "mpconfig.h" |
| #include "nlr.h" |
| #include "misc.h" |
| #include "qstr.h" |
| #include "obj.h" |
| #include "parsenum.h" |
| #include "runtime0.h" |
| #include "runtime.h" |
| |
| #if MICROPY_ENABLE_FLOAT |
| |
| #if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT |
| #include "formatfloat.h" |
| #endif |
| |
| STATIC void float_print(void (*print)(void *env, const char *fmt, ...), void *env, mp_obj_t o_in, mp_print_kind_t kind) { |
| mp_obj_float_t *o = o_in; |
| #if MICROPY_FLOAT_IMPL == MICROPY_FLOAT_IMPL_FLOAT |
| char buf[32]; |
| format_float(o->value, buf, sizeof(buf), 'g', 6, '\0'); |
| print(env, "%s", buf); |
| if (strchr(buf, '.') == NULL) { |
| // Python floats always have decimal point |
| print(env, ".0"); |
| } |
| #else |
| char buf[32]; |
| sprintf(buf, "%.17g", (double) o->value); |
| print(env, buf); |
| if (strchr(buf, '.') == NULL) { |
| // Python floats always have decimal point |
| print(env, ".0"); |
| } |
| #endif |
| } |
| |
| STATIC mp_obj_t float_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) { |
| mp_arg_check_num(n_args, n_kw, 0, 1, false); |
| |
| switch (n_args) { |
| case 0: |
| return mp_obj_new_float(0); |
| |
| case 1: |
| default: |
| if (MP_OBJ_IS_STR(args[0])) { |
| // a string, parse it |
| uint l; |
| const char *s = mp_obj_str_get_data(args[0], &l); |
| return mp_parse_num_decimal(s, l, false, false); |
| } else if (MP_OBJ_IS_TYPE(args[0], &mp_type_float)) { |
| // a float, just return it |
| return args[0]; |
| } else { |
| // something else, try to cast it to a float |
| return mp_obj_new_float(mp_obj_get_float(args[0])); |
| } |
| } |
| } |
| |
| STATIC mp_obj_t float_unary_op(int op, mp_obj_t o_in) { |
| mp_obj_float_t *o = o_in; |
| switch (op) { |
| case MP_UNARY_OP_BOOL: return MP_BOOL(o->value != 0); |
| case MP_UNARY_OP_POSITIVE: return o_in; |
| case MP_UNARY_OP_NEGATIVE: return mp_obj_new_float(-o->value); |
| default: return MP_OBJ_NULL; // op not supported |
| } |
| } |
| |
| STATIC mp_obj_t float_binary_op(int op, mp_obj_t lhs_in, mp_obj_t rhs_in) { |
| mp_obj_float_t *lhs = lhs_in; |
| if (MP_OBJ_IS_TYPE(rhs_in, &mp_type_complex)) { |
| return mp_obj_complex_binary_op(op, lhs->value, 0, rhs_in); |
| } else { |
| return mp_obj_float_binary_op(op, lhs->value, rhs_in); |
| } |
| } |
| |
| const mp_obj_type_t mp_type_float = { |
| { &mp_type_type }, |
| .name = MP_QSTR_float, |
| .print = float_print, |
| .make_new = float_make_new, |
| .unary_op = float_unary_op, |
| .binary_op = float_binary_op, |
| }; |
| |
| mp_obj_t mp_obj_new_float(mp_float_t value) { |
| mp_obj_float_t *o = m_new(mp_obj_float_t, 1); |
| o->base.type = &mp_type_float; |
| o->value = value; |
| return (mp_obj_t)o; |
| } |
| |
| mp_float_t mp_obj_float_get(mp_obj_t self_in) { |
| assert(MP_OBJ_IS_TYPE(self_in, &mp_type_float)); |
| mp_obj_float_t *self = self_in; |
| return self->value; |
| } |
| |
| mp_obj_t mp_obj_float_binary_op(int op, mp_float_t lhs_val, mp_obj_t rhs_in) { |
| mp_float_t rhs_val = mp_obj_get_float(rhs_in); // can be any type, this function will convert to float (if possible) |
| switch (op) { |
| case MP_BINARY_OP_ADD: |
| case MP_BINARY_OP_INPLACE_ADD: lhs_val += rhs_val; break; |
| case MP_BINARY_OP_SUBTRACT: |
| case MP_BINARY_OP_INPLACE_SUBTRACT: lhs_val -= rhs_val; break; |
| case MP_BINARY_OP_MULTIPLY: |
| case MP_BINARY_OP_INPLACE_MULTIPLY: lhs_val *= rhs_val; break; |
| // TODO: verify that C floor matches Python semantics |
| case MP_BINARY_OP_FLOOR_DIVIDE: |
| case MP_BINARY_OP_INPLACE_FLOOR_DIVIDE: |
| if (rhs_val == 0) { |
| zero_division_error: |
| nlr_raise(mp_obj_new_exception_msg(&mp_type_ZeroDivisionError, "float division by zero")); |
| } |
| lhs_val = MICROPY_FLOAT_C_FUN(floor)(lhs_val / rhs_val); |
| break; |
| case MP_BINARY_OP_TRUE_DIVIDE: |
| case MP_BINARY_OP_INPLACE_TRUE_DIVIDE: |
| if (rhs_val == 0) { |
| goto zero_division_error; |
| } |
| lhs_val /= rhs_val; |
| break; |
| case MP_BINARY_OP_POWER: |
| case MP_BINARY_OP_INPLACE_POWER: lhs_val = MICROPY_FLOAT_C_FUN(pow)(lhs_val, rhs_val); break; |
| case MP_BINARY_OP_LESS: return MP_BOOL(lhs_val < rhs_val); |
| case MP_BINARY_OP_MORE: return MP_BOOL(lhs_val > rhs_val); |
| case MP_BINARY_OP_EQUAL: return MP_BOOL(lhs_val == rhs_val); |
| case MP_BINARY_OP_LESS_EQUAL: return MP_BOOL(lhs_val <= rhs_val); |
| case MP_BINARY_OP_MORE_EQUAL: return MP_BOOL(lhs_val >= rhs_val); |
| |
| default: |
| return MP_OBJ_NULL; // op not supported |
| } |
| return mp_obj_new_float(lhs_val); |
| } |
| |
| #endif // MICROPY_ENABLE_FLOAT |