diff options
Diffstat (limited to 'src/base/fttrigon.c')
| -rw-r--r-- | src/base/fttrigon.c | 60 |
1 files changed, 30 insertions, 30 deletions
diff --git a/src/base/fttrigon.c b/src/base/fttrigon.c index d6dd098c4..6a10492b2 100644 --- a/src/base/fttrigon.c +++ b/src/base/fttrigon.c @@ -1,33 +1,33 @@ -/***************************************************************************/ -/* */ -/* fttrigon.c */ -/* */ -/* FreeType trigonometric functions (body). */ -/* */ -/* Copyright 2001-2018 by */ -/* 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. */ -/* */ -/***************************************************************************/ - - /*************************************************************************/ - /* */ - /* This is a fixed-point CORDIC implementation of trigonometric */ - /* functions as well as transformations between Cartesian and polar */ - /* coordinates. The angles are represented as 16.16 fixed-point values */ - /* in degrees, i.e., the angular resolution is 2^-16 degrees. Note that */ - /* only vectors longer than 2^16*180/pi (or at least 22 bits) on a */ - /* discrete Cartesian grid can have the same or better angular */ - /* resolution. Therefore, to maintain this precision, some functions */ - /* require an interim upscaling of the vectors, whereas others operate */ - /* with 24-bit long vectors directly. */ - /* */ - /*************************************************************************/ +/**************************************************************************** + * + * fttrigon.c + * + * FreeType trigonometric functions (body). + * + * Copyright 2001-2018 by + * 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. + * + */ + + /************************************************************************** + * + * This is a fixed-point CORDIC implementation of trigonometric + * functions as well as transformations between Cartesian and polar + * coordinates. The angles are represented as 16.16 fixed-point values + * in degrees, i.e., the angular resolution is 2^-16 degrees. Note that + * only vectors longer than 2^16*180/pi (or at least 22 bits) on a + * discrete Cartesian grid can have the same or better angular + * resolution. Therefore, to maintain this precision, some functions + * require an interim upscaling of the vectors, whereas others operate + * with 24-bit long vectors directly. + * + */ #include <ft2build.h> #include FT_INTERNAL_OBJECTS_H |