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Added prototypes and notes for three new functions: FT_RoundFix, 

FT_CeilFix, and FT_FloorFix.
This commit is contained in:
Tom Kacvinsky 2001-03-10 19:01:21 +00:00
parent 1b20ae6162
commit 30e00c6be6
1 changed files with 68 additions and 0 deletions
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68
include/freetype/freetype.h
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@ -2227,6 +2227,9 @@ FT_BEGIN_HEADER
/* FT_MulDiv */
/* FT_MulFix */
/* FT_DivFix */
/* FT_RoundFix */
/* FT_CeilFix */
/* FT_FloorFix */
/* FT_Vector_Transform */
/* FT_Matrix_Multiply */
/* FT_Matrix_Invert */
@ -2322,6 +2325,71 @@ FT_BEGIN_HEADER
FT_Long b );
/*************************************************************************/
/* */
/* <Function> */
/* FT_RoundFix */
/* */
/* <Description> */
/* A very simple function used to round a 16.16 fixed number */
/* */
/* <Input> */
/* a :: The number to be rounded. */
/* */
/* <Return> */
/* The result of `(a + 0x8000) & -0x10000'. */
/* */
/* <Note> */
/* This function assumes that the target platform supports 32 bit */
/* signed integers. */
/* */
FT_EXPORT( FT_Fixed ) FT_RoundFix( FT_Fixed a );
/*************************************************************************/
/* */
/* <Function> */
/* FT_CeilFix */
/* */
/* <Description> */
/* A very simple function used to compute the ceiling function of a */
/* 16.16 fixed number */
/* */
/* <Input> */
/* a :: The number for which the ceiling function is to be computed. */
/* */
/* <Return> */
/* The result of `(a + 0x10000 - 1) & -0x10000'. */
/* */
/* <Note> */
/* This function assumes that the target platform supports 32 bit */
/* signed integers. */
/* */
FT_EXPORT( FT_Fixed ) FT_CeilFix( FT_Fixed a );
/*************************************************************************/
/* */
/* <Function> */
/* FT_FloorFix */
/* */
/* <Description> */
/* A very simple function used to compute the floor function of a */
/* 16.16 fixed number */
/* */
/* <Input> */
/* a :: The number for which the floor function is to be computed. */
/* */
/* <Return> */
/* The result of `a & -0x10000'. */
/* */
/* <Note> */
/* This function assumes that the target platform supports 32 bit */
/* signed integers. */
/* */
FT_EXPORT( FT_Fixed ) FT_FloorFix( FT_Fixed a );
/*************************************************************************/
/* */
/* <Function> */