diff options
Diffstat (limited to 'src/3rdparty/freetype/src/tools/test_trig.c')
| -rw-r--r-- | src/3rdparty/freetype/src/tools/test_trig.c | 98 |
1 files changed, 60 insertions, 38 deletions
diff --git a/src/3rdparty/freetype/src/tools/test_trig.c b/src/3rdparty/freetype/src/tools/test_trig.c index 8c8a544aa9..99ac1cf174 100644 --- a/src/3rdparty/freetype/src/tools/test_trig.c +++ b/src/3rdparty/freetype/src/tools/test_trig.c @@ -8,9 +8,8 @@ #define PI 3.14159265358979323846 #define SPI (PI/FT_ANGLE_PI) -/* the precision in 16.16 fixed float points of the checks. Expect */ -/* between 2 and 5 noise LSB bits during operations, due to */ -/* rounding errors.. */ +/* the precision in 16.16 fixed-point checks. Expect between 2 and 5 */ +/* noise LSB bits during operations, due to rounding errors.. */ #define THRESHOLD 64 static error = 0; @@ -18,14 +17,16 @@ static void test_cos( void ) { - FT_Fixed f1, f2; - double d1, d2; - int i; + int i; - for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000 ) + + for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000L ) { + FT_Fixed f1, f2; + double d2; + + f1 = FT_Cos(i); - d1 = f1/65536.0; d2 = cos( i*SPI ); f2 = (FT_Fixed)(d2*65536.0); @@ -39,18 +40,19 @@ } - static void test_sin( void ) { - FT_Fixed f1, f2; - double d1, d2; - int i; + int i; - for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000 ) + + for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000L ) { + FT_Fixed f1, f2; + double d2; + + f1 = FT_Sin(i); - d1 = f1/65536.0; d2 = sin( i*SPI ); f2 = (FT_Fixed)(d2*65536.0); @@ -67,14 +69,16 @@ static void test_tan( void ) { - FT_Fixed f1, f2; - double d1, d2; - int i; + int i; - for ( i = 0; i < FT_ANGLE_PI2-0x2000000; i += 0x10000 ) + + for ( i = 0; i < FT_ANGLE_PI2 - 0x2000000L; i += 0x10000L ) { + FT_Fixed f1, f2; + double d2; + + f1 = FT_Tan(i); - d1 = f1/65536.0; d2 = tan( i*SPI ); f2 = (FT_Fixed)(d2*65536.0); @@ -91,12 +95,16 @@ static void test_atan2( void ) { - FT_Fixed c2, s2; - double l, a, c1, s1; - int i, j; + int i; - for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000 ) + + for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000L ) { + FT_Fixed c2, s2; + double l, a, c1, s1; + int j; + + l = 5.0; a = i*SPI; @@ -118,16 +126,20 @@ } } + static void test_unit( void ) { - FT_Vector v; - double a, c1, s1; - FT_Fixed c2, s2; - int i; + int i; + - for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000 ) + for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000L ) { + FT_Vector v; + double a, c1, s1; + FT_Fixed c2, s2; + + FT_Vector_Unit( &v, i ); a = ( i*SPI ); c1 = cos(a); @@ -151,12 +163,15 @@ static void test_length( void ) { - FT_Vector v; - FT_Fixed l, l2; - int i; + int i; + - for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000 ) + for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000L ) { + FT_Vector v; + FT_Fixed l, l2; + + l = (FT_Fixed)(500.0*65536.0); v.x = (FT_Fixed)( l * cos( i*SPI ) ); v.y = (FT_Fixed)( l * sin( i*SPI ) ); @@ -175,19 +190,26 @@ static void test_rotate( void ) { - FT_Fixed c2, s2, c4, s4; - FT_Vector v; - double l, ra, a, c1, s1, cra, sra, c3, s3; - int i, j, rotate; + int rotate; + - for ( rotate = 0; rotate < FT_ANGLE_2PI; rotate += 0x10000 ) + for ( rotate = 0; rotate < FT_ANGLE_2PI; rotate += 0x10000L ) { + double ra, cra, sra; + int i; + + ra = rotate*SPI; cra = cos( ra ); sra = sin( ra ); - for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000 ) + for ( i = 0; i < FT_ANGLE_2PI; i += 0x10000L ) { + FT_Fixed c2, s2, c4, s4; + FT_Vector v; + double l, a, c1, s1, c3, s3; + + l = 500.0; a = i*SPI; |