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showbc.c

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  • objfloat.c NaN GiB
    #include <stdlib.h>
    #include <stdint.h>
    #include <string.h>
    #include <assert.h>
    
    #include "nlr.h"
    #include "misc.h"
    #include "mpconfig.h"
    #include "qstr.h"
    #include "obj.h"
    #include "runtime0.h"
    
    #if MICROPY_ENABLE_FLOAT
    
    typedef struct _mp_obj_float_t {
        mp_obj_base_t base;
        mp_float_t value;
    } mp_obj_float_t;
    
    mp_obj_t mp_obj_new_float(mp_float_t value);
    
    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;
        print(env, "%.8g", (double) o->value);
    }
    
    STATIC mp_obj_t float_make_new(mp_obj_t type_in, uint n_args, uint n_kw, const mp_obj_t *args) {
        // TODO check n_kw == 0
    
        switch (n_args) {
            case 0:
                return mp_obj_new_float(0);
    
            case 1:
                // TODO allow string as arg and parse it
                if (MP_OBJ_IS_TYPE(args[0], &float_type)) {
                    return args[0];
                } else {
                    return mp_obj_new_float(mp_obj_get_float(args[0]));
                }
    
            default:
                nlr_jump(mp_obj_new_exception_msg_1_arg(MP_QSTR_TypeError, "float takes at most 1 argument, %d given", (void*)(machine_int_t)n_args));
        }
    }
    
    STATIC mp_obj_t float_unary_op(int op, mp_obj_t o_in) {
        mp_obj_float_t *o = o_in;
        switch (op) {
            case RT_UNARY_OP_BOOL: return MP_BOOL(o->value != 0);
            case RT_UNARY_OP_POSITIVE: return o_in;
            case RT_UNARY_OP_NEGATIVE: return mp_obj_new_float(-o->value);
            default: return 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, &complex_type)) {
            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 float_type = {
        { &mp_const_type },
        "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 = &float_type;
        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, &float_type));
        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 RT_BINARY_OP_ADD:
            case RT_BINARY_OP_INPLACE_ADD: lhs_val += rhs_val; break;
            case RT_BINARY_OP_SUBTRACT:
            case RT_BINARY_OP_INPLACE_SUBTRACT: lhs_val -= rhs_val; break;
            case RT_BINARY_OP_MULTIPLY:
            case RT_BINARY_OP_INPLACE_MULTIPLY: lhs_val *= rhs_val; break;
            /* TODO floor(?) the value
            case RT_BINARY_OP_FLOOR_DIVIDE:
            case RT_BINARY_OP_INPLACE_FLOOR_DIVIDE: val = lhs_val / rhs_val; break;
            */
            case RT_BINARY_OP_TRUE_DIVIDE:
            case RT_BINARY_OP_INPLACE_TRUE_DIVIDE: lhs_val /= rhs_val; break;
    
            case RT_BINARY_OP_LESS: return MP_BOOL(lhs_val < rhs_val);
            case RT_BINARY_OP_MORE: return MP_BOOL(lhs_val > rhs_val);
            case RT_BINARY_OP_LESS_EQUAL: return MP_BOOL(lhs_val <= rhs_val);
            case RT_BINARY_OP_MORE_EQUAL: return MP_BOOL(lhs_val >= rhs_val);
    
            return NULL; // op not supported
        }
        return mp_obj_new_float(lhs_val);
    }
    
    #endif