o_195h4n6al16jb186b1b2qs7fgssa.pdf

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Include: Prototype: double atan2 (double y, double x); Arguments: y y value for which to return the arc tangent x x value for which to return the arc tangent Return Value: Returns the arc tangent inradians in the range of-pi to pi (inclusive) with the quadrant determined by the signs of both parameters. Remarks: A domain error occurs if both xand yare zero or both xand yare +/- infinity. Example: #include /* for atan2 */ #include /* for printf, perror */ #include /* for errno */ int main(void) { double x, y, z; dsPIC ® Language Tools Libraries nổi y; int i; for (i = 0; i
if (errno) perror("Error"); printf("The arctangent of %f/%f is %f\n\n", y, x, z); } Output: The arctangent of 2.000000/0.000000 is 1.570796 The arctangent of 0.000000/-1.000000 is 3.141593 Error: domain error The arctangent of 0.000000/0.000000 is nan atan2 (Continued) Standard C Libraries with Math Functions 2004 Microchip Technology Inc. DS51456B-page 331 atan2f Description: Calculates the trigonometric arc tangent function of y/x. Include: Prototype: float atan2f (float y, float x); Arguments: y y value for which to return the arc tangent x x value for which to return the arc tangent Return Value: Returns the arc tangent inradians in the range of-pi to pi with the quadrant determined by the signs of both parameters. Remarks: A domain error occurs if both xand yare zero or both xand yare +/- infinity. Example: #include /* for atan2f */ #include /* for printf, perror */ #include /* for errno */ int main(void) { float x, y, z; errno = 0; x = 2.0F; y = 0.0F; z = atan2f (y, x); if (errno) perror("Error"); printf("The arctangent of %f/%f is %f\n\n", y, x, z); errno = 0; x = 0.0F; Thư viện Công cụ Ngôn ngữ DS51456B trang 334 errno = 0; x = 0,0; y = cos (x); if (errno) perror ("Lỗi"); printf ("cô sin của% f% f \ n \ n", x, y); } Đầu ra: Các cô sin của -1,000000 là 0,540302 Các cô sin của 0.000000 là 1.000000 cosf 2004 Microchip Technology Inc Mô tả: Tính hàm cosin lượng giác của một độ chính xác đơn nổi giá trị điểm. Bao gồm: Prototype: cosf nổi (float x); Đối số: x giá trị mà toreturn cô sin Quay trở lại giá trị: Trả về cosin của xin radian trong phạm vi của -1 đến 1 bao gồm. Bình luận: Một lỗi miền sẽ xảy ra nếu XIS một NaN hoặc vô cùng. Ví dụ: # include / * Cho cosf * / # include / * Cho printf, perror * / # include / * Cho errno * / int main (void) { float x, y; errno = 0; x = -1.0F; y = cosf (x); if (errno) perror ("Lỗi"); printf ("cô sin của% f% f \ n \ n", x, y); errno = 0; x = 0.0f; y = cosf (x); if (errno) perror ("Lỗi"); printf ("cô sin của% f% f \ n \ n", x, y); }
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2004 Microchip Technology Inc. DS51
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dsPIC ®LANGUAGE TOOLS LIBRARIES 20
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215 4.11 variable argument lists .
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and macros for standard C operation
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This documentation is provided on t
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• Development Systems Information
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data section. The alternate startup
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specific libraries.) When compiling
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esults will occur when the function
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A batch file named makedsplib.batis
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-15 or smaller than -1.0. Analogous
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CORCON saved, used, restored DOand
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fractional* srcV ); Arguments: numE
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VectorCorrelateis 4 less than whate
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less than or equal to any previous
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Remarks: The negated value of 0x800
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Cycles (including C-function call a
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plus program words from VectorCopy
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Prototype: extern fractional* Black
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); Arguments: numElems number of el
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the base address of the matrix. Bec
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in default RAM memory space (X-Data
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0 ≤i < numRows1 0 ≤j < numCols2
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20 + 3(numRows*numCols) MatrixSubtr
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(of the same dimension) whose eleme
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history of the filter. After perfor
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Oppenheim and Ronald Schafer’s Di
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modulo buffer. Source samples, x[n]
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FIRDelayInit Description: FIRDelayI
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filter. Include: dsp.h Prototype: e
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FIRStruct* filter, fractional* refS
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energyEstimate estimated energy val
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fractional* delayBase ); Arguments:
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Source File: iircan.asm DSP Library
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srcSamps pointer to source samples
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} IIRTransposedStruct; extern fract
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no REPEATinstructions Program words
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Language Tools Libraries DS51456B-p
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for instance if: a = Op1 (b, c), wi
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and stores the results in the desti
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Description: DCTIPcomputes the Disc
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int log2N, fractcomplex* dstCV, fra
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fractcomplex* srcCV, fractcomplex*
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value can be calculated using the i
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A complex vector of size N/2 must h
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specific libraries. When compiling
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Control I/O pin definitions RW_PIN
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y calling the BusyXLCD()function. T
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COM1_COM16 COM16_COM1 Display On/Of
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Source File: CAN1AbortAll.c CAN2Abo
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char CAN2IsRXPassive(void); Argumen
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CAN2SendMessage Description: This f
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CAN2SetMask Description: This funct
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CAN_IDLE_CON_NO_WAITCAN On in Idle
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CAN_INDI_INVMESS_DIS CAN_INDI_WAK_D
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{ /* Length of data tobe transmitte
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Return Value: If the value of DONE
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dsPIC Peripheral Libraries 2004 Mic
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..... SKIP_SCAN_AN15 Return Value:
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DS51456B-page 100 3.5.2 Individual
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3.6 ADC10 FUNCTIONS This section co
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Module On/Off ADC_MODULE_ON ADC_MOD
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ADPCFG register as defined below: E
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ADC_CHX_NEG_SAMPLEB_AN6AN7AN8 ADC_C
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Scanselect = SKIP_SCAN_AN2 & SKIP_S
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dsPIC ® Language Tools Libraries D
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void OpenTimer4(unsigned int config
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Tx_SOURCE_EXT Tx_SOURCE_INT period
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3.7.2 Individual Macros WriteTimer2
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SetPriorityIntT4 SetPriorityIntT5 D
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Code Example: char reset_state; res
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Arguments: None Remarks: This macro
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stored into CNPU2 register. The upp
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SetPriorityInt2 SetPriorityInt3 Set
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IC_INT_PRIOR_3 IC_INT_PRIOR_4 IC_IN
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ReadCapture3 ReadCapture4 ReadCaptu
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void CloseOC4(void); void CloseOC5(
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Include: outcompare.h Prototype: vo
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Include: outcompare.h Prototype: un
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SetDCOC3PWM SetDCOC4PWM SetDCOC5PWM
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Code Example: pulse_start = 0x40 ;
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T3CON = 0x8000; T1CON = 0X8000; /*
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Transmit Interrupt Priority UART_TX
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UART_1STOPBIT config2 This contains
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Source File: WriteUART1.c WriteUART
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Code Example: EnableIntU2TX; Disabl
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ConfigIntUART1(UART_RX_INT_EN & UAR
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DCI_INT_PRI_4 DCI_INT_PRI_5 DCI_INT
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DCI_FRAME_LEN_15 DCI_FRAME_LEN_14 .
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Prototype: unsigned int ReadDCI(uns
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contents are sent duringthe timeslo
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SPI_INT_PRI_4 SPI_INT_PRI_5 SPI_INT
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Prototype: void WriteSPI1(unsigned
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Remarks: This functions initializes
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2004 Microchip Technology Inc. DS51
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SEC_PRESCAL_7_1 & PRI_PRESCAL_64_1;
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enables/disables the interrupt. Sou
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QEI_QE_CLK_DIVIDE_1_32 QEI_QE_CLK_D
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} int main(void) { unsigned int max
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PWM_PEN2H PWM_PDIS2H PWM_PEN1H PWM_
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PWM_POUT_1L Bit defines related to
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PWM_DTS3I_UA PWM_DTS3I_UB Dead Time
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PWM_OVA3H_INACTIVE PWM_OVA2H_INACTI
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#include #include void __attribute
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Prototype: void ConfigIntI2C(unsign
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Arguments: None Return Value None R
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a #definestatement in the i2c.h Sou
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I2C_IDLE_CON SCL Release Control bi
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i2c_data_wait This is the timeout c
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3.17.2 Individual Macros StartI2C D
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Arguments: None Remarks: This macro
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• src\libm- source code for math
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Remarks: The expression evaluates t
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if (isalpha(ch)) printf("# is alpha
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Remarks: A character is considered
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ch = '&'; if (isprint(ch)) printf("
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int ch; ch = 'B'; printf("B changes
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DBL_MIN_10_EXP Description: Minimum
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Include: Value: 1 Remarks: Rounds
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Description: Maximum value of a lon
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abort - terminating See the example
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} Output: Illegal instruction execu
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must be at least one named argument
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Include: Prototype: #define va_end
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to perform input and output operati
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_IOLBF Description: Indicates line
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Include: Prototype: void clearerr(
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Include: Prototype: int feof(FILE
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Error indicator reset Standard C Li
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fpos_t pos; char buf[25]; if ((myfi
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Description: Opens a file. Include:
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Explanation: afile1must exist befor
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Arguments: s string to be written s
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10.0/2 = 5.000000 10.0/3 = 3.333333
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Explanation: This program uses myfi
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SEEK_CUR- seeks from the current po
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*pos if successful; otherwise, fset
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if ((myfile = fopen("afile.out", "r
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10.0/2 = 5.000000 10.0/3 = 3.333333
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Return Value: Returns the character
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Standard C Libraries with Math Func
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e, E doublein scientific notation f
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putchar Description: Put a characte
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Output: File renamed dsPIC ® Langu
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® Language Tools Libraries DS51456
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setbuf(myfile1, NULL); printf("myfi
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int main(void) { char sbuf[100], s[
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Include: Prototype: char *tmpnam(c
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ungetc (Continued) Standard C Libra
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va_list ap; va_start(ap, fmt); prin
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with operands of type long. Include
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i = -2; printf("The absolute value
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(int) strtol(s,0,10)except it does
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eturn 0; else return 1; } Output: S
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printf("For div(%d, %d)\n", x, y);
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free Description: Frees memory. Inc
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printf("The absolute value of %7ld
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Page 339 and 340: object. If reallocsucceeds in alloc
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Page 345 and 346: Prototype: size_t wcstombs(char *s,
Page 347 and 348: characters in s2and returns a value
Page 349 and 350: printf("\n"); memcpy(buf1, buf3, 5)
Page 351 and 352: printf("\n"); printf("memset(\"%s\"
Page 353 and 354: printf("buf1 : %s\n\n", buf1); ptr
Page 355 and 356: uf3 : Why? buf2 comes before buf1 b
Page 357 and 358: str1, str2, res); res = strcspn(str
Page 359 and 360: (string length = 11 characters) str
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Page 363 and 364: printf("buf1 : %s\n", buf1); printf
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Page 367 and 368: else printf("%c not found\n", ch2);
Page 369 and 370: printf("\"%s\" found at position %d
Page 371 and 372: Output: str1 : Here, on top of the
Page 373 and 374: MMMis month of the year ddis day of
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Page 377 and 378: printf("Local time = %s\n", asctime
Page 379 and 380: Example: #include /* for strftime,
Page 381 and 382: (in magnitude) to be represented in
Page 383 and 384: Argument: x value between -1 and 1
Page 385: y = atan (x); printf("The arctangen
Page 389 and 390: for (i=0; i
Page 391 and 392: } Output: The cosine of -1.000000 i
Page 393 and 394: Error: range error The hyperbolic c
Page 395 and 396: errno = 0; x = -1E3; y = exp (x); i
Page 397 and 398: y = fabs (x); printf("The absolute
Page 399 and 400: -2.0F, -1.75F, -1.5F, -1.25F}; floa
Page 401 and 402: x, y, z); errno = 0; x = 7.0; y = 0
Page 403 and 404: perror("Error"); printf("For fmodf
Page 405 and 406: Return Value: Returns the fraction,
Page 407 and 408: printf("For a number = %fand an exp
Page 409 and 410: ldexpf(-0.625000, 2) = -2.500000 Fo
Page 411 and 412: x, y); errno = 0; x = 0.0; y = log1
Page 413 and 414: NaN is returned if xis a negative n
Page 415 and 416: Arguments: x single precision float
Page 417 and 418: dsPIC ® Language Tools Libraries D
Page 419 and 420: The sine of -1.000000 is -0.841471
Page 421 and 422: The hyperbolic sine of 0.000000 is
Page 423 and 424: Error: domain error The square root
Page 425 and 426: Return Value: Returns the tangent o
Page 427 and 428: x, y); } Output: The hyperbolic tan
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Page 431 and 432: eginning of the file. A return valu
Page 433 and 434: through the simulator. The return v
Page 435 and 436: uffer points to the storage locatio
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div.sd __builtin_divud Description:
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mul.uu dsPIC ® Language Tools Libr
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Return Value: Returns the psv page
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__builtin_mulus ...................
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arcsine Double Floating Point......
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Set Priority Macro.................
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isxdigit...........................
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String to Unsigned LongInteger ....
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DCT................................
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EnableIntlCx.......................
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Single Floating Point .............
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DBL_MAX_10_EXP ....................
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Single Floating Point..............
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tanhf .............................
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Set Capture Interrupt Priority ....
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ldiv_t ............................
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long long unsigned int Maximum Valu
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MatrixInvert ......................
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Single Floating Point..............
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system.............................
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Quick Sort ........................
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SEEK_SET...........................
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Minimum Value .....................
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va_arg ............................
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atoi ..............................
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strncpy ...........................
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Write..............................
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unsigned short int Maximum Value ..
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Zero, divide by....................
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