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       index.md (1182B)
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            1 GRAPHEME\_IS\_UPPERCASE(3) - Library Functions Manual
            2 
            3 # NAME
            4 
            5 **grapheme\_is\_uppercase** - check if codepoint array is uppercase
            6 
            7 # SYNOPSIS
            8 
            9 **#include <grapheme.h>**
           10 
           11 *size\_t*  
           12 **grapheme\_is\_uppercase**(*const uint\_least32\_t \*str*, *size\_t len*, *size\_t \*caselen*);
           13 
           14 # DESCRIPTION
           15 
           16 The
           17 **grapheme\_is\_uppercase**()
           18 function checks if the codepoint array
           19 *str*
           20 is uppercase and writes the length of the matching uppercase-sequence to the integer pointed to by
           21 *caselen*,
           22 unless
           23 *caselen*
           24 is set to
           25 `NULL`.
           26 
           27 If
           28 *len*
           29 is set to
           30 `SIZE_MAX`
           31 (stdint.h is already included by grapheme.h) the codepoint array
           32 *src*
           33 is interpreted to be NUL-terminated and processing stops when a
           34 NUL-byte is encountered.
           35 
           36 For UTF-8-encoded input data
           37 grapheme\_is\_uppercase\_utf8(3)
           38 can be used instead.
           39 
           40 # RETURN VALUES
           41 
           42 The
           43 **grapheme\_is\_uppercase**()
           44 function returns
           45 `true`
           46 if the codepoint array
           47 *str*
           48 is uppercase, otherwise
           49 `false`.
           50 
           51 # SEE ALSO
           52 
           53 grapheme\_is\_uppercase\_utf8(3),
           54 libgrapheme(7)
           55 
           56 # STANDARDS
           57 
           58 **grapheme\_is\_uppercase**()
           59 is compliant with the Unicode 15.0.0 specification.
           60 
           61 # AUTHORS
           62 
           63 Laslo Hunhold ([dev@frign.de](mailto:dev@frign.de))
           64 
           65 suckless.org - 2022-10-06