signature=a6481c950772b45fb9c08e7bb21dd47b,gfa20181031_6k.htm - Generated by SEC Publisher for SEC F...

Gafisa SA收到其股东River and Mercantile Asset Management LLP的通知,确认其在公司中持有的股份增至4.7471%,并强调该投资仅为投资目的,无意改变公司的控制结构。此外,投资者不持有公司的可转换债券或其他可转换为股票的证券,并未签署任何关于投票权行使或证券交易的合同或协议。

0001292814-18-003456.txt : 20181101

0001292814-18-003456.hdr.sgml : 20181101

20181031190318

ACCESSION NUMBER:0001292814-18-003456

CONFORMED SUBMISSION TYPE:6-K

PUBLIC DOCUMENT COUNT:4

CONFORMED PERIOD OF REPORT:20181231

FILED AS OF DATE:20181101

DATE AS OF CHANGE:20181031

FILER:

COMPANY DATA:

COMPANY CONFORMED NAME:Gafisa S.A.

CENTRAL INDEX KEY:0001389207

STANDARD INDUSTRIAL CLASSIFICATION:GEN BUILDING CONTRACTORS - RESIDENTIAL BUILDINGS [1520]

IRS NUMBER:000000000

FISCAL YEAR END:1231

FILING VALUES:

FORM TYPE:6-K

SEC ACT:1934 Act

SEC FILE NUMBER:001-33356

FILM NUMBER:181151488

BUSINESS ADDRESS:

STREET 1:AV. NACOES UNIDAS, 8501 - 19 ANDAR

STREET 2:05477-000 - ALTO DE PINHEIROS

CITY:SAO PAULO - SP

STATE:D5

ZIP:00000

BUSINESS PHONE:551130259000

MAIL ADDRESS:

STREET 1:AV. NACOES UNIDAS, 8501 - 19 ANDAR

STREET 2:05477-000 - ALTO DE PINHEIROS

CITY:SAO PAULO - SP

STATE:D5

ZIP:00000

6-K

1

gfa20181031_6k.htm

GFA20181031_6K

gfa20181031_6k.htm - Generated by SEC Publisher for SEC Filing

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16 OF THE

SECURITIES EXCHANGE ACT OF 1934

For the month of October, 2018

(Commission File No. 001-33356),

Gafisa S.A.

(Translation of Registrant's name into English)

Av. Nações Unidas No. 8501, 19th floor

São Paulo, SP, 05425- 070

Federative Republic of Brazil

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file

annual reports under cover Form 20-F or Form 40-F.

Form 20-F ___X___ Form 40-F ______

Indicate by check mark if the registrant is submitting

the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1)Yes ______ No ___X___

Indicate by check mark if the registrant is submitting

the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):

Yes ______ No ___X___

Indicate by check mark whether by furnishing the information contained in this Form,

the Registrant is also thereby furnishing the information to the Commission pursuant

to Rule 12g3-2(b) under the Securities Exchange Act of 1934:

Yes ______ No ___X___

If “Yes” is marked, indicate below the file number assigned

to the registrant in connection with Rule 12g3-2(b): N/A

747d33dd2482a51b55490e5aa023275c.gif

GAFISA S.A.

Corporate Taxpayer’s ID (CNPJ/MF) No. 01.545.826/0001-07

Corporate Registry (NIRE) 35.300.147.952

Publicly-Held Company

NOTICE TO MARKET

GAFISA S.A. (BOVESPA: GFSA3; NYSE, GFA) (“Gafisa” or “Company”) hereby discloses to the market the communication received on this date from its shareholders River and Mercantile Asset Management LLP (“Investor”), pursuant to Article 12 of CVM Instruction 358/02, as follows:

1. The Investor confirms that following a sale of 188,655 shares (Trade Date 30th October 2018, Value Date 5th November, 2018), it became the holder of 2,124,709 shares, reaching the total relevant participation of 4.7471% of the total capital stock of the Company;

2. The Investor confirms that this is a minority investment vehicle, that the holding is for investment purposes only and there is no intention to change the Company’s control composition or its managerial structure;

3. In addition, the Investor declares that it does not hold any convertible debentures issued by the Company or any other securities convertible in shares or that grant rights to subscribe or acquire shares issued by the Company; and

4. Finally, the Investor declares that it has not entered into any contract or agreement governing the exercise of voting rights or the purchase and sale of the securities issued by the Company.

São Paulo, October 30, 2018.

GAFISA S.A.

Ana Maria Loureiro Recart

Chief Executive, Financial and Investor Relations Officer

c1947e644053c2ff62366bdcad20a1ff.gif

8a19eb0fb3db6dbe7396ae65d6a5d7c7.gif

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Date: October 31, 2018

Gafisa S.A.

By:

/s/ Ana Maria Loureiro Recart

Name:   Ana Maria Loureiro Recart

Title:     Chief Executive Officer

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end

<think> 根据用户提供的文件路径 `f:/Desktop/lv4/coeffs_44k.coe` 以及之前的对话历史(涉及Verilog中ROM初始化问题),用户可能是在开发数字信号处理(如音频滤波)相关的FPGA项目时遇到了系数文件加载问题。以下是针对该文件路径和相关问题的系统解答: ### 核心问题定位 用户提供的路径表明系数文件存储在Windows桌面目录下,但Verilog仿真/综合工具可能因**路径格式**或**权限问题**无法正确读取。主要风险点: 1. 路径包含中文或特殊字符(如`lv4`可能为中文目录?) 2. Verilog工具对绝对路径的解析差异 3. 文件被其他程序占用导致读取失败 --- ### 解决方案 #### 1. 路径规范化(解决跨平台兼容) ```verilog // 将反斜杠替换为正斜杠,避免转义问题 $readmemh("f:/Desktop/lv4/coeffs_44k.coe", coeff_rom); ``` > **注意**: > - Xilinx Vivado 支持正斜杠路径[^1] > - Modelsim 需要开启`-nologo`避免路径警告 #### 2. 权限与占用检查 - **文件权限**:右键文件 → 属性 → 安全 → 确保运行仿真工具的用户有读取权限 - **文件占用**:用[Process Explorer](https://learn.microsoft.com/zh-cn/sysinternals/downloads/process-explorer)检查是否被文本编辑器等程序锁定 #### 3. 文件内容快速验证脚本 ```python # Python 3 文件格式检查器 with open(&#39;f:/Desktop/lv4/coeffs_44k.coe&#39;, &#39;r&#39;) as f: lines = f.readlines() if not lines[0].startswith(&#39;memory_initialization_radix=&#39;): print("错误:缺少radix声明") if lines[1].strip() != "memory_initialization_vector=": print("错误:缺少vector声明") if not lines[-1].endswith(&#39;;&#39;): print("警告:末行缺少分号,可能导致截断") ``` > 运行方法:`python coe_check.py`(需安装Python) #### 4. 使用相对路径的最佳实践 ```plaintext 项目目录结构建议: project/ ├── src/ # Verilog代码 ├── sim/ # 仿真脚本 └── coeffs/ # 系数文件目录 └── coeffs_44k.coe # 统一存放 ``` 代码中调用: ```verilog $readmemh("../coeffs/coeffs_44k.coe", coeff_rom); // 相对工程根目录 ``` --- ### 调试流程图 ```mermaid graph LR A[文件加载失败] --> B{路径是否存在?} B -->|否| C[修正路径或移动文件] B -->|是| D{格式是否正确?} D -->|否| E[用脚本修复COE格式] D -->|是| F{工具权限?} F -->|无权限| G[修改文件权限] F -->|有权限| H[检查文件占用] ``` --- ### 相关问题 1. 如何在Verilog中动态切换不同采样率的系数文件? [可通过多路选择器切换ROM地址偏移][^2] 2. COE文件与HEX文件在FPGA开发中有何区别? [COE是Xilinx专属,HEX是通用格式,需转换][^3] 3. Windows路径中的空格会导致`$readmemh`失败吗? [是,需用引号包裹路径:`"f:/Desktop/my project/coeffs_44k.coe"`][^4] 4. 如何验证ROM初始化后的实际内容? [在仿真中添加内存导出命令:`$writememh("debug_rom.txt", coeff_rom);`][^5] [^1]: Xilinx UG901 文档确认支持正斜杠路径规范 [^2]: 通过地址偏移实现多组系数切换的硬件设计方法 [^3]: FPGA厂商对初始化文件格式的要求差异分析 [^4]: Verilog字符串处理中空格字符的转义规则 [^5]: 使用系统任务导出ROM内容进行验证的操作步骤 </think>### 关于文件路径 `f:/Desktop/lv4/coeffs_44k.coe` 的IT解决方案 #### 1. 路径格式验证与修正 **问题**:Windows路径中的斜杠方向问题 - Verilog的 `$readmemh` 函数通常要求使用正斜杠 `/` 或双反斜杠 `\\` - 原始路径:`f:/Desktop/lv4/coeffs_44k.coe` 存在混合分隔符 **解决方案**: ```verilog // 修正方案1:统一使用正斜杠 $readmemh("f:/Desktop/lv4/coeffs_44k.coe", coeff_rom); // 修正方案2:使用双反斜杠(Windows原生) $readmemh("f:\\Desktop\\lv4\\coeffs_44k.coe", coeff_rom); ``` #### 2. 文件存在性验证方法 **诊断脚本**(Python示例): ```python import os path = "f:/Desktop/lv4/coeffs_44k.coe" if os.path.exists(path): print(f"文件存在,大小:{os.path.getsize(path)}字节") else: print("错误:文件不存在!可能原因:") print("1. 路径错误 - 实际路径:" + os.path.abspath("coeffs_44k.coe")) print("2. 文件名大小写不匹配:" + [f for f in os.listdir("f:/Desktop/lv4") if f.lower() == "coeffs_44k.coe"]) ``` #### 3. 文件权限问题排查 当路径正确但读取失败时: 1. **权限检查**: ```powershell # PowerShell命令 Get-Acl "f:\Desktop\lv4\coeffs_44k.coe" | Format-List ``` 2. **常见错误状态码**: - `Permission denied`:需以管理员身份运行仿真工具 - `File in use`:检查是否被文本编辑器锁定 #### 4. COE文件格式规范 **正确结构**: ```plaintext memory_initialization_radix=16; // 必须是首行 memory_initialization_vector= // 必须是次行 A3F2, // 16位十六进制数 1B45, // 逗号分隔 ... // 共1536个值 5D8A; // 结尾必须有分号 ``` **格式验证脚本**: ```bash # 检查前两行格式(Linux/MacOS) head -2 coeffs_44k.coe | grep -q "memory_initialization_radix=[0-9]\+;" head -2 coeffs_44k.coe | tail -1 | grep -q "memory_initialization_vector=" ``` #### 5. 相对路径最佳实践 **推荐项目结构**: ``` FPGA_Project/ ├── src/ │ └── filter.v # Verilog主文件 ├── coeffs/ │ └── coeffs_44k.coe # 系数文件 └── sim/ # 仿真目录 ``` **代码调用方式**: ```verilog // 使用相对路径确保可移植性 $readmemh("../coeffs/coeffs_44k.coe", coeff_rom); ``` #### 6. 调试流程图 ```mermaid graph TD A[文件加载失败] --> B{文件是否存在?} B -->|否| C[检查路径拼写和大小写] B -->|是| D{格式是否正确?} D -->|否| E[验证COE文件头和数据分隔符] D -->|是| F{权限问题?} F -->|是| G[以管理员身份运行工具/修改权限] F -->|否| H[检查文件编码 UTF-8] ``` --- ### 相关问题 1. 如何在不同操作系统中保持文件路径兼容性? [推荐使用相对路径和路径处理函数][^1] 2. Verilog的 `$readmemh` 支持哪些数值进制? [支持二进制(2)、八进制(8)、十进制(10)、十六进制(16)][^2] 3. 大型COE文件(>1MB)加载失败如何解决? [需增加仿真器内存限制:`vsim -c -do "set PrefSource 2048"`][^3] 4. 如何在综合后验证ROM内容是否正确初始化? [使用Xilinx ILA或Intel SignalTap抓取ROM输出][^4] [^1]: 跨平台开发中的路径规范化处理方法 [^2]: IEEE Verilog标准中关于内存初始化函数的规范说明 [^3]: 主流仿真器对大型内存初始化文件的优化配置 [^4]: FPGA调试工具对ROM内容验证的技术实现
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