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Merge pull request #1 from pinkavaj/fast-00

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speed up float_to_bits
This commit is contained in:
Bastian Bloessl 2014-10-04 11:27:36 +02:00
commit 940134a3f8
1 changed files with 19 additions and 10 deletions
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29
src/float_to_bits.c
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@ -71,6 +71,9 @@ static void sym_int2bits(int sym, uint8_t *ret)
} }
} }
// size of IO buffers (number of elements)
#define BUF_SIZE 1024
int main(int argc, char **argv) int main(int argc, char **argv)
{ {
int fd, fd_out, opt; int fd, fd_out, opt;
@ -104,21 +107,27 @@ int main(int argc, char **argv)
} }
while (1) { while (1) {
int rc; int rc;
float fl; float fl[BUF_SIZE];
uint8_t bits[2]; uint8_t bits[2*BUF_SIZE];
rc = read(fd, &fl, sizeof(fl)); rc = read(fd, fl, sizeof(*fl) * BUF_SIZE);
if (rc < 0) { if (rc < 0) {
perror("read"); perror("read");
exit(1); exit(1);
} else if (rc == 0) } else if (rc == 0) {
break; break;
rc = process_sym_fl(fl); }
sym_int2bits(rc, bits); rc /= sizeof(*fl);
//printf("%2d %1u %1u %f\n", rc, bits[0], bits[1], fl); int i;
if (opt_verbose) for (i = 0; i < rc; ++i) {
printf("%1u%1u", bits[0], bits[1]); int sym = process_sym_fl(fl[i]);
sym_int2bits(sym, bits + i*2);
//printf("%2d %1u %1u %f\n", rc, bits[0], bits[1], fl);
if (opt_verbose) {
printf("%1u%1u", bits[2*i + 0], bits[2*i + 1]);
}
}
rc = write(fd_out, bits, 2); rc = write(fd_out, bits, rc * 2);
if (rc < 0) { if (rc < 0) {
perror("write"); perror("write");
exit(1); exit(1);