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Code Issues 4 Releases Wiki Activity

* src/base/ftcalc.c (FT_MOVE_SIGN): Enclose assignments.

This commit is contained in:
Alexei Podtelezhnikov 2023-09-24 19:39:10 -04:00
parent cc732ec6d1
commit 73490681a7
1 changed files with 31 additions and 60 deletions
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91
src/base/ftcalc.c
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@ -69,13 +69,15 @@
/* transfer sign, leaving a positive number; */
/* we need an unsigned value to safely negate INT_MIN (or LONG_MIN) */
#define FT_MOVE_SIGN( x, x_unsigned, s ) \
FT_BEGIN_STMNT \
if ( x < 0 ) \
{ \
x_unsigned = 0U - (x_unsigned); \
s = -s; \
} \
#define FT_MOVE_SIGN( utype, x, x_unsigned, s ) \
FT_BEGIN_STMNT \
if ( x < 0 ) \
{ \
x_unsigned = 0U - (utype)x; \
s = -s; \
} \
else \
x_unsigned = (utype)x; \
FT_END_STMNT
/* The following three functions are available regardless of whether */
@ -179,13 +181,9 @@
FT_Long d_;
a = (FT_UInt64)a_;
b = (FT_UInt64)b_;
c = (FT_UInt64)c_;
FT_MOVE_SIGN( a_, a, s );
FT_MOVE_SIGN( b_, b, s );
FT_MOVE_SIGN( c_, c, s );
FT_MOVE_SIGN( FT_UInt64, a_, a, s );
FT_MOVE_SIGN( FT_UInt64, b_, b, s );
FT_MOVE_SIGN( FT_UInt64, c_, c, s );
d = c > 0 ? ( a * b + ( c >> 1 ) ) / c
: 0x7FFFFFFFUL;
@ -208,13 +206,9 @@
FT_Long d_;
a = (FT_UInt64)a_;
b = (FT_UInt64)b_;
c = (FT_UInt64)c_;
FT_MOVE_SIGN( a_, a, s );
FT_MOVE_SIGN( b_, b, s );
FT_MOVE_SIGN( c_, c, s );
FT_MOVE_SIGN( FT_UInt64, a_, a, s );
FT_MOVE_SIGN( FT_UInt64, b_, b, s );
FT_MOVE_SIGN( FT_UInt64, c_, c, s );
d = c > 0 ? a * b / c
: 0x7FFFFFFFUL;
@ -257,11 +251,8 @@
FT_Long q_;
a = (FT_UInt64)a_;
b = (FT_UInt64)b_;
FT_MOVE_SIGN( a_, a, s );
FT_MOVE_SIGN( b_, b, s );
FT_MOVE_SIGN( FT_UInt64, a_, a, s );
FT_MOVE_SIGN( FT_UInt64, b_, b, s );
q = b > 0 ? ( ( a << 16 ) + ( b >> 1 ) ) / b
: 0x7FFFFFFFUL;
@ -422,13 +413,9 @@
/* XXX: this function does not allow 64-bit arguments */
a = (FT_UInt32)a_;
b = (FT_UInt32)b_;
c = (FT_UInt32)c_;
FT_MOVE_SIGN( a_, a, s );
FT_MOVE_SIGN( b_, b, s );
FT_MOVE_SIGN( c_, c, s );
FT_MOVE_SIGN( FT_UInt32, a_, a, s );
FT_MOVE_SIGN( FT_UInt32, b_, b, s );
FT_MOVE_SIGN( FT_UInt32, c_, c, s );
if ( c == 0 )
a = 0x7FFFFFFFUL;
@ -470,13 +457,9 @@
/* XXX: this function does not allow 64-bit arguments */
a = (FT_UInt32)a_;
b = (FT_UInt32)b_;
c = (FT_UInt32)c_;
FT_MOVE_SIGN( a_, a, s );
FT_MOVE_SIGN( b_, b, s );
FT_MOVE_SIGN( c_, c, s );
FT_MOVE_SIGN( FT_UInt32, a_, a, s );
FT_MOVE_SIGN( FT_UInt32, b_, b, s );
FT_MOVE_SIGN( FT_UInt32, c_, c, s );
if ( c == 0 )
a = 0x7FFFFFFFUL;
@ -575,11 +558,8 @@
/* XXX: this function does not allow 64-bit arguments */
a = (FT_UInt32)a_;
b = (FT_UInt32)b_;
FT_MOVE_SIGN( a_, a, s );
FT_MOVE_SIGN( b_, b, s );
FT_MOVE_SIGN( FT_UInt32, a_, a, s );
FT_MOVE_SIGN( FT_UInt32, b_, b, s );
if ( a + ( b >> 8 ) <= 8190UL )
a = ( a * b + 0x8000UL ) >> 16;
@ -614,11 +594,8 @@
/* XXX: this function does not allow 64-bit arguments */
a = (FT_UInt32)a_;
b = (FT_UInt32)b_;
FT_MOVE_SIGN( a_, a, s );
FT_MOVE_SIGN( b_, b, s );
FT_MOVE_SIGN( FT_UInt32, a_, a, s );
FT_MOVE_SIGN( FT_UInt32, b_, b, s );
if ( b == 0 )
{
@ -829,11 +806,8 @@
FT_Int sx = 1, sy = 1, shift;
x = (FT_UInt32)x_;
y = (FT_UInt32)y_;
FT_MOVE_SIGN( x_, x, sx );
FT_MOVE_SIGN( y_, y, sy );
FT_MOVE_SIGN( FT_UInt32, x_, x, sx );
FT_MOVE_SIGN( FT_UInt32, y_, y, sy );
/* trivial cases */
if ( x == 0 )
@ -1122,11 +1096,8 @@
FT_UInt32 factor;
scalar = (FT_UInt32)s[i];
factor = (FT_UInt32)f[i];
FT_MOVE_SIGN( s[i], scalar, sign );
FT_MOVE_SIGN( f[i], factor, sign );
FT_MOVE_SIGN( FT_UInt32, s[i], scalar, sign );
FT_MOVE_SIGN( FT_UInt32, f[i], factor, sign );
ft_multo64( scalar, factor, &multResult );