Re: [pure-lang-users] Proposed syntax changes

[Eddie R. <er...@bm...>]

Use to be, 0.5*x produced faster code than x/2.0. Well, I was pleasantly
surprised with the assembly output of "gcc -S -O2 test.c" produced
exactly the same output.

test.c:
------------------------------
#include <stdio.h>

int main(void) {
  double a, b, c;

  printf("Enter first num:");
  scanf("%g", &a);
  printf("Enter second num:");
  scanf("%g", &b);
  c = a/2.0;
  printf("%g\n", c);
  c = 0.5*b;
  printf("%g\n", c);
  return 0;
}
-----------------------------
Portion of the assembly:
-----------------------------
call	scanf
	movsd	.LC3(%rip), %xmm0
	movl	$.LC4, %edi
	movl	$1, %eax
	mulsd	16(%rsp), %xmm0
	call	printf
	movsd	.LC3(%rip), %xmm0
	movl	$.LC4, %edi
	movl	$1, %eax
	mulsd	8(%rsp), %xmm0
	call	printf

e.r.