vec_add
ADD TO COMPARE ADDED TO COMPARE

IBM Power 9 64-bit (64 bits)/ VSX View official documentation

Location: >

Purpose:

Adds the corresponding elements of two vectors.

Result:

The value of each element of output is the sum of the corresponding elements of a and b. Modular arithmetic is used for both signed and unsigned integers.

Prototypes

Assembly Instruction:

vadduwm

Usage:


								
									vector signed int output =
								
								vec_add(
								
									vector signed int a, vector signed int b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector signed int a = {
  1, 2, 3, 4
 };
 vector signed int b = {
  5, 6, 7, 8
 };
 vector signed int result = vec_add(a, b);
 int* res = (int*)&result;
 for (int i = 0; i < 4; ++i) {
   printf("%d ", res[i]);
  }
  printf("\n");

  return 0;
 }

Assembly Instruction:

vadduhm

Usage:


								
									vector signed short output =
								
								vec_add(
								
									vector signed short a, vector signed short b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector signed short a = {
  1, 2, 3, 4, 5, 6, 7, 8
 };
 vector signed short b = {
  8, 7, 6, 5, 4, 3, 2, 1
 };
 vector signed short result = vec_add(a, b);
 short res[8];
 vec_st(result, 0, res);
 for (int i = 0; i < 8; ++i) {
   printf("%d ", res[i]);
  }
  printf("\n");

  return 0;
 }

Assembly Instruction:

vaddudm

Usage:


								
									vector signed long long output =
								
								vec_add(
								
									vector signed long long a, vector signed long long b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector signed long long a = {
  1, 2, 3, 4
 };
 vector signed long long b = {
  5, 6, 7, 8
 };
 vector signed long long result = vec_add(a, b);
 long long* res = (long long*)&result;
 printf("%lld %lld %lld %lld\n", res[0], res[1], res[2], res[3]);

 return 0;
}

Assembly Instruction:

vadduhm

Usage:


								
									vector unsigned short output =
								
								vec_add(
								
									vector unsigned short a, vector unsigned short b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector unsigned short a = {
  1, 2, 3, 4, 5, 6, 7, 8
 };
 vector unsigned short b = {
  8, 7, 6, 5, 4, 3, 2, 1
 };
 vector unsigned short result = vec_add(a, b);
 unsigned short* res = (unsigned short*)&result;
 for (int i = 0; i < 8; ++i) {
   printf("%u ", res[i]);
  }
  printf("\n");

  return 0;
 }

Assembly Instruction:

vadduwm

Usage:


								
									vector unsigned int output =
								
								vec_add(
								
									vector unsigned int a, vector unsigned int b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector unsigned int a = {
  1, 2, 3, 4
 };
 vector unsigned int b = {
  5, 6, 7, 8
 };
 vector unsigned int result = vec_add(a, b);
 unsigned int* res = (unsigned int*)&result;
 for (int i = 0; i < 4; ++i) {
   printf("%u ", res[i]);
  }
  printf("\n");

  return 0;
 }

Assembly Instruction:

vaddubm

Usage:


								
									vector signed char output =
								
								vec_add(
								
									vector signed char a, vector signed char b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector signed char a = {
  1, 2, 3, 4, 5, 6, 7, 8
 };
 vector signed char b = {
  8, 7, 6, 5, 4, 3, 2, 1
 };
 vector signed char result = vec_add(a, b);
 signed char res[8];
 vec_st(result, 0, res);
 for (int i = 0; i < 8; i++) {
   printf("%d ", res[i]);
  }
  printf("\n");

  return 0;
 }

Assembly Instruction:

vaddudm

Usage:


								
									vector unsigned long long output =
								
								vec_add(
								
									vector unsigned long long a, vector unsigned long long b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector unsigned long long a = {
  1ULL, 2ULL
 };
 vector unsigned long long b = {
  3ULL, 4ULL
 };
 vector unsigned long long result = vec_add(a, b);
 unsigned long long res[2];
 for (int i = 0; i < 2; i++) {
   res[i] = result[i];
  }
  printf("%llu %llu\n", res[0], res[1]);

  return 0;
 }

Assembly Instruction:

xvaddsp

Usage:


								
									vector float output =
								
								vec_add(
								
									vector float a, vector float b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector float a = {
  1.0f, 2.0f, 3.0f, 4.0f
 };
 vector float b = {
  4.0f, 3.0f, 2.0f, 1.0f
 };
 vector float result = vec_add(a, b);
 float* res = (float*)&result;
 for (int i = 0; i < 4; ++i) {
   printf("%f ", res[i]);
  }
  printf("\n");

  return 0;
 }

Assembly Instruction:

vaddudm

Usage:


								
									vector unsigned long long output =
								
								vec_add(
								
									vector unsigned long long a, vector unsigned long long b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector unsigned long long a = {
  1ULL, 2ULL
 };
 vector unsigned long long b = {
  3ULL, 4ULL
 };
 vector unsigned long long result = vec_add(a, b);
 unsigned long long res[2];
 for (int i = 0; i < 2; i++) {
   res[i] = result[i];
  }
  printf("%llu %llu\n", res[0], res[1]);

  return 0;
 }

Assembly Instruction:

vaddudm

Usage:


								
									vector signed long long output =
								
								vec_add(
								
									vector signed long long a, vector signed long long b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector signed long long a = {
  1, 2, 3, 4
 };
 vector signed long long b = {
  5, 6, 7, 8
 };
 vector signed long long result = vec_add(a, b);
 long long* res = (long long*)&result;
 printf("%lld %lld %lld %lld\n", res[0], res[1], res[2], res[3]);

 return 0;
}

Assembly Instruction:

xvadddp

Usage:


								
									vector double output =
								
								vec_add(
								
									vector double a, vector double b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector double a = {
  1.5, 2.5, 3.5, 4.5
 };
 vector double b = {
  4.0, 1.0, 2.0, 5.0
 };
 vector double result = vec_add(a, b);
 double* res = (double*)&result;
 for (int i = 0; i < 4; ++i) {
   printf("%f ", res[i]);
  }
  printf("\n");

  return 0;
 }

Assembly Instruction:

vaddubm

Usage:


								
									vector unsigned char output =
								
								vec_add(
								
									vector unsigned char a, vector unsigned char b
								)

Example:

#include <altivec.h>
#include <stdio.h>
int main() {
 vector unsigned char a = {
  1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16
 };
 vector unsigned char b = {
  16, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1
 };
 vector unsigned char result = vec_add(a, b);
 unsigned char* res = (unsigned char*)&result;
 for (int i = 0; i < 16; i++) {
   printf("%u ", res[i]);
  }
  printf("\n");

  return 0;
 }