/*
  Generic no libc std parts.
*/

#include <stddef.h>

/* Compiler depends on them with low optimization level. */
void *memcpy(void *__restrict dest, const void *__restrict src, size_t n) {
  for (size_t i = 0; i < n; ++i)
    ((char *)dest)[i] = ((char *)src)[i];
  return dest;
};

void *memset(void *__restrict dest, int s, size_t n) {
  for (size_t i = 0; i < n; ++i)
    ((char *)dest)[i] = s;
  return dest;
};

size_t strlen(char const *s) {
  char const *p = s;
  for (; *p != 0; ++p) {
  }
  return p - s;
}

double sin(double v) {
  double r;
  __asm__ __volatile__("fsin" : "=t"(r) : "0"(v));

  return r;
}

double cos(double v) {
  double r;
  __asm__ __volatile__("fcos" : "=t"(r) : "0"(v));
  return r;
}

void sincos(double v, double *s, double *c) {
  double sv, cv;
  __asm__ __volatile__("fsincos" : "=t"(cv), "=u"(sv) : "0"(v));
  *s = sv;
  *c = cv;
}

double sqrt(double v) {
  double r;
  __asm__ volatile("sqrtss %1, %0" : "=x"(r) : "x"(v));
  return r;
}