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Code Issues 9 Releases Wiki Activity

[base] Clean up. 

* src/base/ftcalc.c (FT_MOVE_SIGN): New macro for frequently used code.
This commit is contained in:
Alexei Podtelezhnikov 2014-09-30 23:09:39 -04:00
parent f78ca0dbb9
commit 955aff12c0
2 changed files with 38 additions and 20 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2014-09-30 Alexei Podtelezhnikov <apodtele@gmail.com>
[base] Clean up.
* src/base/ftcalc.c (FT_MOVE_SIGN): New macro for frequently used
code.
2014-09-25 Alexei Podtelezhnikov <apodtele@gmail.com>
[base] Avoid unnecessary long division.

51
src/base/ftcalc.c
View File

@ -68,6 +68,16 @@
#define FT_COMPONENT trace_calc
/* transfer sign leaving a positive number */
#define FT_MOVE_SIGN( x, s ) \
FT_BEGIN_STMNT \
if ( x < 0 ) \
{ \
x = -x; \
s = -s; \
} \
FT_END_STMNT
/* The following three functions are available regardless of whether */
/* FT_LONG64 is defined. */
@ -170,9 +180,9 @@
FT_Long d;
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
if ( c < 0 ) { c = -c; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
FT_MOVE_SIGN( c, s );
d = (FT_Long)( c > 0 ? ( (FT_Int64)a * b + ( c >> 1 ) ) / c
: 0x7FFFFFFFL );
@ -192,9 +202,9 @@
FT_Long d;
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
if ( c < 0 ) { c = -c; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
FT_MOVE_SIGN( c, s );
d = (FT_Long)( c > 0 ? (FT_Int64)a * b / c
: 0x7FFFFFFFL );
@ -219,8 +229,8 @@
FT_Long c;
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
c = (FT_Long)( ( (FT_Int64)a * b + 0x8000L ) >> 16 );
@ -240,8 +250,8 @@
FT_Long q;
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
q = (FT_Long)( b > 0 ? ( ( (FT_UInt64)a << 16 ) + ( b >> 1 ) ) / b
: 0x7FFFFFFFL );
@ -394,9 +404,9 @@
if ( a == 0 || b == c )
return a;
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
if ( c < 0 ) { c = -c; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
FT_MOVE_SIGN( c, s );
if ( c == 0 )
a = 0x7FFFFFFFL;
@ -435,9 +445,9 @@
if ( a == 0 || b == c )
return a;
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
if ( c < 0 ) { c = -c; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
FT_MOVE_SIGN( c, s );
if ( c == 0 )
a = 0x7FFFFFFFL;
@ -538,8 +548,8 @@
if ( a == 0 || b == 0x10000L )
return a;
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
ua = (FT_ULong)a;
ub = (FT_ULong)b;
@ -573,8 +583,9 @@
/* XXX: this function does not allow 64-bit arguments */
if ( a < 0 ) { a = -a; s = -1; }
if ( b < 0 ) { b = -b; s = -s; }
FT_MOVE_SIGN( a, s );
FT_MOVE_SIGN( b, s );
if ( b == 0 )
{