header.h

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <assert.h>

#include "libc_impl.h"
#include "helpers.h"

#define RM_RN 0
#define RM_RZ 1
#define RM_RP 2
#define RM_RM 3

#define cvt_w_d(f) \
    ((fcsr & RM_RZ) ? ((isnan(f) || f <= -2147483649.0 || f >= 2147483648.0) ? (fcsr |= 0x40, 2147483647) : (int)f) : (assert(0), 0))

#define cvt_w_s(f) cvt_w_d((double)f)

static union FloatReg
    f0  = {{0, 0}},
    f1  = {{0, 0}},
    f2  = {{0, 0}},
    f3  = {{0, 0}},
    f4  = {{0, 0}},
    f5  = {{0, 0}},
    f6  = {{0, 0}},
    f7  = {{0, 0}},
    f8  = {{0, 0}},
    f9  = {{0, 0}},
    f10 = {{0, 0}},
    f11 = {{0, 0}},
    f12 = {{0, 0}},
    f13 = {{0, 0}},
    f14 = {{0, 0}},
    f15 = {{0, 0}},
    f16 = {{0, 0}},
    f17 = {{0, 0}},
    f18 = {{0, 0}},
    f19 = {{0, 0}},
    f20 = {{0, 0}},
    f21 = {{0, 0}},
    f22 = {{0, 0}},
    f23 = {{0, 0}},
    f24 = {{0, 0}},
    f25 = {{0, 0}},
    f26 = {{0, 0}},
    f27 = {{0, 0}},
    f28 = {{0, 0}},
    f29 = {{0, 0}},
    f30 = {{0, 0}},
    f31 = {{0, 0}};
static uint32_t fcsr = 1;