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27 lines
403 B
C
27 lines
403 B
C
/* atol - convert decimal number in ascii to long integer */
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#include <portab.h>
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#include <ctype.h>
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LONG atol(s)
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REG BYTE *s;
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{
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REG LONG val;
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REG WORD isneg;
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val = 0L;
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isneg = FALSE;
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while( isspace(*s) )
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s++;
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if( *s == '+' )
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s++;
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else if( *s == '-' ) {
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s++;
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isneg++;
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}
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while( *s >= '0' && *s <= '9' )
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val = 10 * val + ( *s++ - '0' );
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if( isneg )
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val = -val;
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return( val );
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}
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