text: /* Copyright (C) 2007-2009 Xiph.Org Foundation
     Copyright (C) 2003-2008 Jean-Marc Valin
     Copyright (C) 2007-2008 CSIRO
     Copyright (C) 2013      Parrot */
  /*
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
     are met:
  
     - Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
  
     - Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in the
     documentation and/or other materials provided with the distribution.
  
     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
     OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
     LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
     NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
     SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
  
  #ifndef FIXED_ARMv5E_H
  #define FIXED_ARMv5E_H
  
  #include "fixed_armv4.h"
  
  /** 16x32 multiplication, followed by a 16-bit shift right. Results fits in 32 bits */
  #undef MULT16_32_Q16
  static OPUS_INLINE opus_val32 MULT16_32_Q16_armv5e(opus_val16 a, opus_val32 b)
  {
    int res;
    __asm__(
        "#MULT16_32_Q16\n\t"
        "smulwb %0, %1, %2\n\t"
        : "=r"(res)
        : "r"(b),"r"(a)
    );
    return res;
  }
  #define MULT16_32_Q16(a, b) (MULT16_32_Q16_armv5e(a, b))
  
  
  /** 16x32 multiplication, followed by a 15-bit shift right. Results fits in 32 bits */
  #undef MULT16_32_Q15
  static OPUS_INLINE opus_val32 MULT16_32_Q15_armv5e(opus_val16 a, opus_val32 b)
  {
    int res;
    __asm__(
        "#MULT16_32_Q15\n\t"
        "smulwb %0, %1, %2\n\t"
        : "=r"(res)
        : "r"(b), "r"(a)
    );
    return SHL32(res,1);
  }
  #define MULT16_32_Q15(a, b) (MULT16_32_Q15_armv5e(a, b))
  
  
  /** 16x32 multiply, followed by a 15-bit shift right and 32-bit add.
      b must fit in 31 bits.
      Result fits in 32 bits. */
  #undef MAC16_32_Q15
  static OPUS_INLINE opus_val32 MAC16_32_Q15_armv5e(opus_val32 c, opus_val16 a,
   opus_val32 b)
  {
    int res;
    __asm__(
        "#MAC16_32_Q15\n\t"
        "smlawb %0, %1, %2, %3;\n"
        : "=r"(res)
        : "r"(SHL32(b,1)), "r"(a), "r"(c)
    );
    return res;
  }
  #define MAC16_32_Q15(c, a, b) (MAC16_32_Q15_armv5e(c, a, b))
  
  /** 16x32 multiply, followed by a 16-bit shift right and 32-bit add.
      Result fits in 32 bits. */
  #undef MAC16_32_Q16
  static OPUS_INLINE opus_val32 MAC16_32_Q16_armv5e(opus_val32 c, opus_val16 a,
   opus_val32 b)
  {
    int res;
    __asm__(
        "#MAC16_32_Q16\n\t"
        "smlawb %0, %1, %2, %3;\n"
        : "=r"(res)
        : "r"(b), "r"(a), "r"(c)
    );
    return res;
  }
  #define MAC16_32_Q16(c, a, b) (MAC16_32_Q16_armv5e(c, a, b))
  
  /** 16x16 multiply-add where the result fits in 32 bits */
  #undef MAC16_16
  static OPUS_INLINE opus_val32 MAC16_16_armv5e(opus_val32 c, opus_val16 a,
   opus_val16 b)
  {
    int res;
    __asm__(
        "#MAC16_16\n\t"
        "smlabb %0, %1, %2, %3;\n"
        : "=r"(res)
        : "r"(a), "r"(b), "r"(c)
    );
    return res;
  }
  #define MAC16_16(c, a, b) (MAC16_16_armv5e(c, a, b))
  
  /** 16x16 multiplication where the result fits in 32 bits */
  #undef MULT16_16
  static OPUS_INLINE opus_val32 MULT16_16_armv5e(opus_val16 a, opus_val16 b)
  {
    int res;
    __asm__(
        "#MULT16_16\n\t"
        "smulbb %0, %1, %2;\n"
        : "=r"(res)
        : "r"(a), "r"(b)
    );
    return res;
  }
  #define MULT16_16(a, b) (MULT16_16_armv5e(a, b))
  
  #ifdef OPUS_ARM_INLINE_MEDIA
  
  #undef SIG2WORD16
  static OPUS_INLINE opus_val16 SIG2WORD16_armv6(opus_val32 x)
  {
     celt_sig res;
     __asm__(
         "#SIG2WORD16\n\t"
         "ssat %0, #16, %1, ASR #12\n\t"
         : "=r"(res)
         : "r"(x+2048)
     );
     return EXTRACT16(res);
  }
  #define SIG2WORD16(x) (SIG2WORD16_armv6(x))
  
  #endif /* OPUS_ARM_INLINE_MEDIA */
  
  #endif
  