参数资料
型号: IPT-C2H-NIOS
厂商: Altera
文件页数: 126/138页
文件大小: 0K
描述: C2H COMPILER FOR NIOS II
标准包装: 1
系列: Nios®II
类型: Nios II
功能: C 到硬件编译器
许可证: 初始许可证
Language
Escape character sequences in character constants are supported if
they are used as string literals rather than character constants.
The following declaration is supported because it employs a string
literal:
char *newline = "\n";
The following declaration is not supported because it employs a
character constant:
char newline = '\n';
Composite concatenation is not supported in initialization
statements.
The C2H Compiler does not support the initialization statement
which concatenates two strings, such as the following:
char s[] = "this" " string";
The following declaration is supported:
char s[] = "this string";
Bit-Field Declarations (Section 6.7.2.1)
Structs are supported; however, bit-field declarations used in packed
structs are not supported.
For example, the following packed struct defining a 3-bit field is not
supported:
struct my_struct
{
unsigned int tbits:3;
} ms;
ms.tbits = 0xFF;
You can use a mask of appropriate length to identify the significant bits:
struct my_struct
{
unsigned int tbits;
} ms;
ms.tbits = 0xFF & 7;
7–2
Nios II C2H Compiler User Guide
9.1
Altera Corporation
November 2009
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