diff options
Diffstat (limited to 'libFDK/include/mips')
| -rw-r--r-- | libFDK/include/mips/cplx_mul.h | 28 | ||||
| -rw-r--r-- | libFDK/include/mips/fixmul_mips.h | 8 |
2 files changed, 31 insertions, 5 deletions
diff --git a/libFDK/include/mips/cplx_mul.h b/libFDK/include/mips/cplx_mul.h index 4e8f26f..e0781dd 100644 --- a/libFDK/include/mips/cplx_mul.h +++ b/libFDK/include/mips/cplx_mul.h @@ -108,9 +108,20 @@ inline void cplxMultDiv2( FIXP_DBL *c_Re, FIXP_DBL b_Im) { INT result; - result = (((long long)a_Re * b_Re) - ((long long) a_Im * b_Im)) >> 32; + + __asm__ ("mult %[a_Re], %[b_Re];\n" + "msub %[a_Im], %[b_Im];\n" + : "=hi"(result) + : [a_Re]"r"(a_Re), [b_Re]"r"(b_Re), [a_Im]"r"(a_Im), [b_Im]"r"(b_Im) + : "lo"); + *c_Re = result; - result = (((long long)a_Re * b_Im) - ((long long) a_Im * b_Re)) >> 32; + + __asm__ ("mult %[a_Re], %[b_Im];\n" + "madd %[a_Im], %[b_Re];\n" + : "=hi"(result) + : [a_Re]"r"(a_Re), [b_Im]"r"(b_Im), [a_Im]"r"(a_Im), [b_Re]"r"(b_Re) + : "lo"); *c_Im = result; } #endif @@ -124,9 +135,18 @@ inline void cplxMult( FIXP_DBL *c_Re, FIXP_DBL b_Im) { INT result; - result = (((long long)a_Re * b_Re) - ((long long) a_Im * b_Im)) >> 32; + __asm__ ("mult %[a_Re], %[b_Re];\n" + "msub %[a_Im], %[b_Im];\n" + : "=hi"(result) + : [a_Re]"r"(a_Re), [b_Re]"r"(b_Re), [a_Im]"r"(a_Im), [b_Im]"r"(b_Im) + : "lo"); *c_Re = result<<1; - result = (((long long)a_Re * b_Im) - ((long long) a_Im * b_Re)) >> 32; + + __asm__ ("mult %[a_Re], %[b_Im];\n" + "madd %[a_Im], %[b_Re];\n" + : "=hi"(result) + : [a_Re]"r"(a_Re), [b_Im]"r"(b_Im), [a_Im]"r"(a_Im), [b_Re]"r"(b_Re) + : "lo"); *c_Im = result<<1; } #endif diff --git a/libFDK/include/mips/fixmul_mips.h b/libFDK/include/mips/fixmul_mips.h index 0e7af0d..4fb72f7 100644 --- a/libFDK/include/mips/fixmul_mips.h +++ b/libFDK/include/mips/fixmul_mips.h @@ -100,8 +100,14 @@ amm-info@iis.fraunhofer.de inline INT fixmuldiv2_DD (const INT a, const INT b) { + INT result ; - return ((long long) a * b) >> 32; + asm ("mult %1,%2;\n" + : "=hi" (result) + : "d" (a), "r" (b) + : "lo"); + + return result ; } #endif /* (__GNUC__) && defined(__mips__) */ |