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/* Copyright (c) 2007 Dmitry Xmelkov
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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* Neither the name of the copyright holders nor the names of
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contributors may be used to endorse or promote products derived
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from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE. */
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/* $Id: strcspn_P.S,v 1.1.2.1 2007/03/31 23:14:26 dmix Exp $ */
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/** \ingroup avr_pgmspace
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\fn size_t strcspn_P(const char *s, PGM_P reject)
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The strcspn_P() function calculates the length of the initial segment
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of \p s which consists entirely of characters not in \p reject. This
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function is similar to strcspn() except that \p reject is a pointer
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to a string in program space.
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\return The strcspn_P() function returns the number of characters in
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the initial segment of \p s which are not in the string \p reject.
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The terminating zero is not considered as a part of string. */
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#define chs r21 /* char from s[] */
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.type _U(strcspn_P), @function
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; get next symbol from s[]
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brne 1b ; branch if chs is't present in reject[]
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; end of scanning: chs is found or end of s[] is reached
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; Return: X - 1 - str == X + ~str
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.size _U(strcspn_P), . - _U(strcspn_P)
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#endif /* !__DOXYGEN__ */
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libc/pmstring/strcspn_P.S
