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Now in OS/K : floats !

This commit is contained in:
Adrien Bourmault 2019-11-27 00:23:50 +01:00
parent 1d96e30625
commit 4676b84c4c
1 changed files with 14 additions and 12 deletions
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26
kaleid/kernel/sh/shcmds.c
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@ -164,24 +164,26 @@ error_t CmdDumpATASect(int argc, char **argv, char *cmdline)
return EOK; return EOK;
} }
error_t CmdFloat(int argc, char **argv, char *cmdline) error_t CmdFloatDiv(int argc, char **argv, char *cmdline)
{ {
double param = (double)ShAtoi(argv[1]); double a = (double)ShAtoi(argv[1]);
double b = (double)ShAtoi(argv[2]);
double b = 138899.009 / (14.9); //9322,0811409 double number = a / b;
double number_ent = (double)(ulong)number;
double dec = number - number_ent;
double sub = 0.0;
double b_ent = (double)(ulong)b; char res[17]; // 10e-16 is the max precision
double dec = 0.0;
KernLog("int(b) = %d \n", (ulong)b_ent); for(int i = 0; i < 16; i++) {
KernLog("dec(b) = "); dec = (dec * 10.0) - (sub * 10.0);
sub = (double)(ulong)dec;
for(double i = 0; i < param; i++) { snprintf(&res[i], 17-i, "%d", (ulong)dec);
dec = ;
KernLog("%d", (ulong)dec);
} }
KernLog("\n"); KernLog("%d / %d = %d.%s \n", (ulong)a, (ulong)b, (ulong)number_ent, res);
return EOK; return EOK;
} }
@ -362,7 +364,7 @@ static Command_t testcmdtable[] =
{ "help", CmdHelpTest, "Show this message" }, { "help", CmdHelpTest, "Show this message" },
{ "pf", CmdPF, "Provoke a PF. Usage: pfault <address>"}, { "pf", CmdPF, "Provoke a PF. Usage: pfault <address>"},
{ "ps", CmdPsTest, "Scheduler test routine" }, { "ps", CmdPsTest, "Scheduler test routine" },
{ "float", CmdFloat, "Float test" }, { "div", CmdFloatDiv, "Float div. Usage : div a b. Returns a/b"},
{ "rpag", CmdReloadPage, "Reload the pages directory" }, { "rpag", CmdReloadPage, "Reload the pages directory" },
{ "shell", CmdShell, "Start a new shell (nested)", }, { "shell", CmdShell, "Start a new shell (nested)", },
{ "stkov", CmdStackOverflow, "Provoke a stack overflow" }, { "stkov", CmdStackOverflow, "Provoke a stack overflow" },