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sfp-util.h

/*
 * These are copied from glibc/stdlib/longlong.h
 */

#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
  do {                                                                  \
    UWtype __x;                                                         \
    __x = (al) + (bl);                                                  \
    (sh) = (ah) + (bh) + (__x < (al));                                  \
    (sl) = __x;                                                         \
  } while (0)

#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
  do {                                                                  \
    UWtype __x;                                                         \
    __x = (al) - (bl);                                                  \
    (sh) = (ah) - (bh) - (__x > (al));                                  \
    (sl) = __x;                                                         \
  } while (0)

#define umul_ppmm(w1, w0, u, v) \
  __asm__ ("dmulu.l %2,%3\n\tsts    macl,%1\n\tsts  mach,%0"      \
      : "=r" ((u32)(w1)), "=r" ((u32)(w0))      \
      :  "r" ((u32)(u)),   "r" ((u32)(v)) \
      : "macl", "mach")

#define __ll_B ((UWtype) 1 << (W_TYPE_SIZE / 2))
#define __ll_lowpart(t) ((UWtype) (t) & (__ll_B - 1))
#define __ll_highpart(t) ((UWtype) (t) >> (W_TYPE_SIZE / 2))

#define udiv_qrnnd(q, r, n1, n0, d) \
  do {                                                      \
    UWtype __d1, __d0, __q1, __q0;                          \
    UWtype __r1, __r0, __m;                                 \
    __d1 = __ll_highpart (d);                               \
    __d0 = __ll_lowpart (d);                                \
                                                      \
    __r1 = (n1) % __d1;                                     \
    __q1 = (n1) / __d1;                                     \
    __m = (UWtype) __q1 * __d0;                                   \
    __r1 = __r1 * __ll_B | __ll_highpart (n0);                    \
    if (__r1 < __m)                                         \
      {                                                     \
      __q1--, __r1 += (d);                                  \
      if (__r1 >= (d)) /* i.e. we didn't get carry when adding to __r1 */\
        if (__r1 < __m)                               \
          __q1--, __r1 += (d);                              \
      }                                                     \
    __r1 -= __m;                                      \
                                                      \
    __r0 = __r1 % __d1;                                     \
    __q0 = __r1 / __d1;                                     \
    __m = (UWtype) __q0 * __d0;                                   \
    __r0 = __r0 * __ll_B | __ll_lowpart (n0);                     \
    if (__r0 < __m)                                         \
      {                                                     \
      __q0--, __r0 += (d);                                  \
      if (__r0 >= (d))                                \
        if (__r0 < __m)                               \
          __q0--, __r0 += (d);                              \
      }                                                     \
    __r0 -= __m;                                      \
                                                      \
    (q) = (UWtype) __q1 * __ll_B | __q0;                    \
    (r) = __r0;                                             \
  } while (0)

#define abort()   return 0

#define __BYTE_ORDER __LITTLE_ENDIAN



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