53dd513176
which included commits to RCS files with non-trunk default branches. git-svn-id: svn://svn.cc65.org/cc65/trunk@3 b7a2c559-68d2-44c3-8de9-860c34a00d81
64 lines
1017 B
C
64 lines
1017 B
C
/*
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* util.c
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*
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* Ullrich von Bassewitz, 18.06.1998
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*/
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#include "util.h"
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/*****************************************************************************/
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/* data */
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/*****************************************************************************/
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/*****************************************************************************/
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/* code */
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/*****************************************************************************/
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int IsBlank (char c)
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/* Return true if c is a space, tab or newline */
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{
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return (c == ' ' || c == '\t' || c == '\n');
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}
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int IsQuoteChar (char c)
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/* Return true if c is a single or double quote */
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{
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return (c == '"' || c == '\'');
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}
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int powerof2 (unsigned long val)
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/* Return the exponent if val is a power of two. Return -1 if val is not a
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* power of two.
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*/
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{
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int i;
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unsigned long mask;
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mask = 0x0001;
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for (i = 0; i < 32; ++i) {
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if (val == mask) {
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return i;
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}
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mask <<= 1;
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}
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return -1;
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}
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