113
131
* if the character is invalid.
115
133
#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
117
135
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
118
136
'A', 'B', 'C', 'D', 'E', 'F'
121
140
static void /* PRIVATE */
122
141
png_format_buffer(png_structp png_ptr, png_charp buffer, png_const_charp