diff options
Diffstat (limited to 'mpi/mpi-scan.c')
| -rw-r--r-- | mpi/mpi-scan.c | 30 |
1 files changed, 24 insertions, 6 deletions
diff --git a/mpi/mpi-scan.c b/mpi/mpi-scan.c index b9745e1af..329b868ca 100644 --- a/mpi/mpi-scan.c +++ b/mpi/mpi-scan.c @@ -54,22 +54,20 @@ mpi_getbyte( MPI a, unsigned index ) * Put a value at position INDEX into A. index counts from lsb to msb */ void -mpi_putbyte( MPI a, unsigned index, int c ) +mpi_putbyte( MPI a, unsigned index, int xc ) { int i, j; unsigned n; mpi_ptr_t ap; - mpi_limb_t limb; + mpi_limb_t limb, c; -#if BYTES_PER_MPI_LIMB != 4 - #error please enhance this function, its ugly - i know. -#endif - c &= 0xff; + c = xc & 0xff; ap = a->d; for(n=0,i=0; i < a->alloced; i++ ) { limb = ap[i]; for( j=0; j < BYTES_PER_MPI_LIMB; j++, n++ ) if( n == index ) { + #if BYTES_PER_MPI_LIMB == 4 if( j == 0 ) limb = (limb & 0xffffff00) | c; else if( j == 1 ) @@ -78,6 +76,26 @@ mpi_putbyte( MPI a, unsigned index, int c ) limb = (limb & 0xff00ffff) | (c<<16); else limb = (limb & 0x00ffffff) | (c<<24); + #elif BYTES_PER_MPI_LIMB == 8 + if( j == 0 ) + limb = (limb & 0xffffffffffffff00) | c; + else if( j == 1 ) + limb = (limb & 0xffffffffffff00ff) | (c<<8); + else if( j == 2 ) + limb = (limb & 0xffffffffff00ffff) | (c<<16); + else if( j == 3 ) + limb = (limb & 0xffffffff00ffffff) | (c<<24); + else if( j == 4 ) + limb = (limb & 0xffffff00ffffffff) | (c<<32); + else if( j == 5 ) + limb = (limb & 0xffff00ffffffffff) | (c<<40); + else if( j == 6 ) + limb = (limb & 0xff00ffffffffffff) | (c<<48); + else + limb = (limb & 0x00ffffffffffffff) | (c<<56); + #else + #error please enhance this function, its ugly - i know. + #endif if( a->nlimbs <= i ) a->nlimbs = i+1; ap[i] = limb; |