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C: complex numbers + sum of multiples

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This commit is contained in:
Bruno Raoult
2021-08-15 16:33:15 +02:00
parent ccb96a4f2a
commit 74e6219517
17 changed files with 599 additions and 7 deletions
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14
c/square-root/src/square_root.c
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@@ -28,10 +28,9 @@ unsigned square_root(unsigned i)
if (i<=1) /* 0 and 1 */
return i;
//nbits = (sizeof(unsigned) * 8);
for (j = 4, max = 16L;; j += 2, max <<= 2L) {
for (j = 4, max = 16;; j += 2, max <<= 2) {
if (j >= NBITS || i <= max) {
sq2 = (1L << (j >> 1));
sq2 = (1 << (j >> 1));
break;
}
}
@@ -45,11 +44,18 @@ unsigned square_root(unsigned i)
#ifdef UNIT_TEST
int main(int ac, char **av)
{
unsigned i, j;
unsigned i;
/* int arg=1;
for (; arg<ac; ++arg) {
i=atol(av[arg]);
printf("sqrt(%u)=%u\n", i, square_root(i));
}
*/
if (ac && *av)
for (i=0; i<100000000; ++i)
square_root(65025);
printf("sq=%u\n", square_root(65536));
}
#endif