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Least stack-usage self-contained ftostr32np()

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This is the optimal code for a self-contained formatter, although the
original code is crafty in being smaller and simpler, and can be
evaluated as using the original output as a scratch pad for state,
making the final formatter more straightforward. While this code is
longer, all code-paths are minimal.
This commit is contained in:
Scott Lahteine 2014-12-08 01:43:44 -08:00
parent d1f21d1189
commit 10e1b6ef8b
1 changed files with 1 additions and 15 deletions
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16
Marlin/ultralcd.cpp
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@ -1498,7 +1498,6 @@ char *ftostr12ns(const float &x)
// convert float to space-padded string with -_23.4_ format // convert float to space-padded string with -_23.4_ format
char *ftostr32np(const float &x) { char *ftostr32np(const float &x) {
<<<<<<< HEAD
long xx = abs(x * 100); long xx = abs(x * 100);
uint8_t dig; uint8_t dig;
@ -1525,8 +1524,7 @@ char *ftostr32np(const float &x) {
dig = xx % 10; dig = xx % 10;
if (dig) { // 2 decimal places if (dig) { // 2 decimal places
conv[5] = '0' + dig; conv[5] = '0' + dig;
dig = (xx / 10) % 10; conv[4] = '0' + (xx / 10) % 10;
conv[4] = '0' + dig;
conv[3] = '.'; conv[3] = '.';
} }
else { // 1 or 0 decimal place else { // 1 or 0 decimal place
@ -1542,18 +1540,6 @@ char *ftostr32np(const float &x) {
} }
conv[6] = '\0'; conv[6] = '\0';
return conv; return conv;
=======
char *c = ftostr32(x);
if (c[0] == '0' || c[0] == '-') {
if (c[0] == '0') c[0] = ' ';
if (c[1] == '0') c[1] = ' ';
}
if (c[5] == '0') {
c[5] = ' ';
if (c[4] == '0') c[4] = c[3] = ' ';
}
return c;
>>>>>>> Patch to make Z look more like X and Y on UltraLCD
} }
char *itostr31(const int &xx) char *itostr31(const int &xx)