third_party/freetype/include/internal/ftcalc.h - Issue 1416993005: Merge to XFA: Update bundled freetype to 2.6.1

Unified Diff: third_party/freetype/include/internal/ftcalc.h

Issue 1416993005: Merge to XFA: Update bundled freetype to 2.6.1 (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@xfa

Patch Set: Created 5 years, 1 month ago

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Index: third_party/freetype/include/internal/ftcalc.h

diff --git a/third_party/freetype/include/internal/ftcalc.h b/third_party/freetype/include/internal/ftcalc.h

deleted file mode 100644

index 14ec37b9cd1b7e2cb708883a9465982228df128f..0000000000000000000000000000000000000000

--- a/third_party/freetype/include/internal/ftcalc.h

+++ /dev/null

@@ -1,406 +0,0 @@

-/***************************************************************************/

-/* */

-/* ftcalc.h */

-/* */

-/* Arithmetic computations (specification). */

-/* */

-/* David Turner, Robert Wilhelm, and Werner Lemberg. */

-/* */

-/* This file is part of the FreeType project, and may only be used, */

-/* modified, and distributed under the terms of the FreeType project */

-/* license, LICENSE.TXT. By continuing to use, modify, or distribute */

-/* this file you indicate that you have read the license and */

-/* understand and accept it fully. */

-/* */

-/***************************************************************************/

-#ifndef __FTCALC_H__

-#define __FTCALC_H__

-#include <ft2build.h>

-#include FT_FREETYPE_H

-FT_BEGIN_HEADER

- /*************************************************************************/

- /* */

- /* FT_MulDiv() and FT_MulFix() are declared in freetype.h. */

- /* */

- /*************************************************************************/

-#ifndef FT_CONFIG_OPTION_NO_ASSEMBLER

- /* Provide assembler fragments for performance-critical functions. */

- /* These must be defined `static __inline__' with GCC. */

-#if defined( __CC_ARM ) || defined( __ARMCC__ ) /* RVCT */

-#define FT_MULFIX_ASSEMBLER FT_MulFix_arm

- /* documentation is in freetype.h */

- static __inline FT_Int32

- FT_MulFix_arm( FT_Int32 a,

- FT_Int32 b )

- {

- register FT_Int32 t, t2;

- __asm

- {

- smull t2, t, b, a /* (lo=t2,hi=t) = a*b */

- mov a, t, asr #31 /* a = (hi >> 31) */

- add a, a, #0x8000 /* a += 0x8000 */

- adds t2, t2, a /* t2 += a */

- adc t, t, #0 /* t += carry */

- mov a, t2, lsr #16 /* a = t2 >> 16 */

- orr a, a, t, lsl #16 /* a |= t << 16 */

- }

- return a;

- }

-#endif /* __CC_ARM || __ARMCC__ */

-#ifdef __GNUC__

-#if defined( __arm__ ) && \

- ( !defined( __thumb__ ) || defined( __thumb2__ ) ) && \

- !( defined( __CC_ARM ) || defined( __ARMCC__ ) )

-#define FT_MULFIX_ASSEMBLER FT_MulFix_arm

- /* documentation is in freetype.h */

- static __inline__ FT_Int32

- FT_MulFix_arm( FT_Int32 a,

- FT_Int32 b )

- {

- register FT_Int32 t, t2;

- __asm__ __volatile__ (

- "smull %1, %2, %4, %3\n\t" /* (lo=%1,hi=%2) = a*b */

- "mov %0, %2, asr #31\n\t" /* %0 = (hi >> 31) */

-#if defined( __clang__ ) && defined( __thumb2__ )

- "add.w %0, %0, #0x8000\n\t" /* %0 += 0x8000 */

-#else

- "add %0, %0, #0x8000\n\t" /* %0 += 0x8000 */

-#endif

- "adds %1, %1, %0\n\t" /* %1 += %0 */

- "adc %2, %2, #0\n\t" /* %2 += carry */

- "mov %0, %1, lsr #16\n\t" /* %0 = %1 >> 16 */

- "orr %0, %0, %2, lsl #16\n\t" /* %0 |= %2 << 16 */

- : "=r"(a), "=&r"(t2), "=&r"(t)

- : "r"(a), "r"(b)

- : "cc" );

- return a;

- }

-#endif /* __arm__ && */

- /* ( __thumb2__ || !__thumb__ ) && */

- /* !( __CC_ARM || __ARMCC__ ) */

-#if defined( __i386__ )

-#define FT_MULFIX_ASSEMBLER FT_MulFix_i386

- /* documentation is in freetype.h */

- static __inline__ FT_Int32

- FT_MulFix_i386( FT_Int32 a,

- FT_Int32 b )

- {

- register FT_Int32 result;

- __asm__ __volatile__ (

- "imul %%edx\n"

- "movl %%edx, %%ecx\n"

- "sarl $31, %%ecx\n"

- "addl $0x8000, %%ecx\n"

- "addl %%ecx, %%eax\n"

- "adcl $0, %%edx\n"

- "shrl $16, %%eax\n"

- "shll $16, %%edx\n"

- "addl %%edx, %%eax\n"

- : "=a"(result), "=d"(b)

- : "a"(a), "d"(b)

- : "%ecx", "cc" );

- return result;

- }

-#endif /* i386 */

-#endif /* __GNUC__ */

-#ifdef _MSC_VER /* Visual C++ */

-#ifdef _M_IX86

-#define FT_MULFIX_ASSEMBLER FT_MulFix_i386

- /* documentation is in freetype.h */

- static __inline FT_Int32

- FT_MulFix_i386( FT_Int32 a,

- FT_Int32 b )

- {

- register FT_Int32 result;

- __asm

- {

- mov eax, a

- mov edx, b

- imul edx

- mov ecx, edx

- sar ecx, 31

- add ecx, 8000h

- add eax, ecx

- adc edx, 0

- shr eax, 16

- shl edx, 16

- add eax, edx

- mov result, eax

- }

- return result;

- }

-#endif /* _M_IX86 */

-#endif /* _MSC_VER */

-#if defined( __GNUC__ ) && defined( __x86_64__ )

-#define FT_MULFIX_ASSEMBLER FT_MulFix_x86_64

- static __inline__ FT_Int32

- FT_MulFix_x86_64( FT_Int32 a,

- FT_Int32 b )

- {

- /* Temporarily disable the warning that C90 doesn't support */

- /* `long long'. */

-#if __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 6 )

-#pragma GCC diagnostic push

-#pragma GCC diagnostic ignored "-Wlong-long"

-#endif

-#if 1

- /* Technically not an assembly fragment, but GCC does a really good */

- /* job at inlining it and generating good machine code for it. */

- long long ret, tmp;

- ret = (long long)a * b;

- tmp = ret >> 63;

- ret += 0x8000 + tmp;

- return (FT_Int32)( ret >> 16 );

-#else

- /* For some reason, GCC 4.6 on Ubuntu 12.04 generates invalid machine */

- /* code from the lines below. The main issue is that `wide_a' is not */

- /* properly initialized by sign-extending `a'. Instead, the generated */

- /* machine code assumes that the register that contains `a' on input */

- /* can be used directly as a 64-bit value, which is wrong most of the */

- /* time. */

- long long wide_a = (long long)a;

- long long wide_b = (long long)b;

- long long result;

- __asm__ __volatile__ (

- "imul %2, %1\n"

- "mov %1, %0\n"

- "sar $63, %0\n"

- "lea 0x8000(%1, %0), %0\n"

- "sar $16, %0\n"

- : "=&r"(result), "=&r"(wide_a)

- : "r"(wide_b)

- : "cc" );

- return (FT_Int32)result;

-#endif

-#if __GNUC__ > 4 || ( __GNUC__ == 4 && __GNUC_MINOR__ >= 6 )

-#pragma GCC diagnostic pop

-#endif

- }

-#endif /* __GNUC__ && __x86_64__ */

-#endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */

-#ifdef FT_CONFIG_OPTION_INLINE_MULFIX

-#ifdef FT_MULFIX_ASSEMBLER

-#define FT_MulFix( a, b ) FT_MULFIX_ASSEMBLER( (FT_Int32)(a), (FT_Int32)(b) )

-#endif

- /*************************************************************************/

- /* */

- /* <Function> */

- /* FT_MulDiv_No_Round */

- /* */

- /* <Description> */

- /* A very simple function used to perform the computation `(a*b)/c' */

- /* (without rounding) with maximum accuracy (it uses a 64-bit */

- /* intermediate integer whenever necessary). */

- /* */

- /* This function isn't necessarily as fast as some processor specific */

- /* operations, but is at least completely portable. */

- /* */

- /* <Input> */

- /* a :: The first multiplier. */

- /* b :: The second multiplier. */

- /* c :: The divisor. */

- /* */

- /* <Return> */

- /* The result of `(a*b)/c'. This function never traps when trying to */

- /* divide by zero; it simply returns `MaxInt' or `MinInt' depending */

- /* on the signs of `a' and `b'. */

- /* */

- FT_BASE( FT_Long )

- FT_MulDiv_No_Round( FT_Long a,

- FT_Long b,

- FT_Long c );

- /*

- * A variant of FT_Matrix_Multiply which scales its result afterwards.

- * The idea is that both `a' and `b' are scaled by factors of 10 so that

- * the values are as precise as possible to get a correct result during

- * the 64bit multiplication. Let `sa' and `sb' be the scaling factors of

- * `a' and `b', respectively, then the scaling factor of the result is

- * `sa*sb'.

- */

- FT_BASE( void )

- FT_Matrix_Multiply_Scaled( const FT_Matrix* a,

- FT_Matrix *b,

- FT_Long scaling );

- /*

- * A variant of FT_Vector_Transform. See comments for

- * FT_Matrix_Multiply_Scaled.

- */

- FT_BASE( void )

- FT_Vector_Transform_Scaled( FT_Vector* vector,

- const FT_Matrix* matrix,

- FT_Long scaling );

- /*

- * Return -1, 0, or +1, depending on the orientation of a given corner.

- * We use the Cartesian coordinate system, with positive vertical values

- * going upwards. The function returns +1 if the corner turns to the

- * left, -1 to the right, and 0 for undecidable cases.

- */

- FT_BASE( FT_Int )

- ft_corner_orientation( FT_Pos in_x,

- FT_Pos in_y,

- FT_Pos out_x,

- FT_Pos out_y );

- /*

- * Return TRUE if a corner is flat or nearly flat. This is equivalent to

- * saying that the corner point is close to its neighbors, or inside an

- * ellipse defined by the neighbor focal points to be more precise.

- */

- FT_BASE( FT_Int )

- ft_corner_is_flat( FT_Pos in_x,

- FT_Pos in_y,

- FT_Pos out_x,

- FT_Pos out_y );

- /*

- * Return the most significant bit index.

- */

-#ifndef FT_CONFIG_OPTION_NO_ASSEMBLER

-#if defined( __GNUC__ ) && \

- ( __GNUC__ > 3 || ( __GNUC__ == 3 && __GNUC_MINOR__ >= 4 ) )

-#if FT_SIZEOF_INT == 4

-#define FT_MSB( x ) ( 31 - __builtin_clz( x ) )

-#elif FT_SIZEOF_LONG == 4

-#define FT_MSB( x ) ( 31 - __builtin_clzl( x ) )

-#endif

-#endif /* __GNUC__ */

-#endif /* !FT_CONFIG_OPTION_NO_ASSEMBLER */

-#ifndef FT_MSB

- FT_BASE( FT_Int )

- FT_MSB( FT_UInt32 z );

-#endif

- /*

- * Return sqrt(x*x+y*y), which is the same as `FT_Vector_Length' but uses

- * two fixed-point arguments instead.

- */

- FT_BASE( FT_Fixed )

- FT_Hypot( FT_Fixed x,

- FT_Fixed y );

-#if 0

- /*************************************************************************/

- /* */

- /* <Function> */

- /* FT_SqrtFixed */

- /* */

- /* <Description> */

- /* Computes the square root of a 16.16 fixed-point value. */

- /* */

- /* <Input> */

- /* x :: The value to compute the root for. */

- /* */

- /* <Return> */

- /* The result of `sqrt(x)'. */

- /* */

- /* <Note> */

- /* This function is not very fast. */

- /* */

- FT_BASE( FT_Int32 )

- FT_SqrtFixed( FT_Int32 x );

-#endif /* 0 */

-#define INT_TO_F26DOT6( x ) ( (FT_Long)(x) << 6 )

-#define INT_TO_F2DOT14( x ) ( (FT_Long)(x) << 14 )

-#define INT_TO_FIXED( x ) ( (FT_Long)(x) << 16 )

-#define F2DOT14_TO_FIXED( x ) ( (FT_Long)(x) << 2 )

-#define FLOAT_TO_FIXED( x ) ( (FT_Long)( x * 65536.0 ) )

-#define FIXED_TO_INT( x ) ( FT_RoundFix( x ) >> 16 )

-#define ROUND_F26DOT6( x ) ( x >= 0 ? ( ( (x) + 32 ) & -64 ) \

- : ( -( ( 32 - (x) ) & -64 ) ) )

-FT_END_HEADER

-#endif /* __FTCALC_H__ */

-/* END */

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