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nota float

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John Alanbrook 2024-01-16 20:32:31 +00:00
parent f330082b8b
commit e97842e60e
2 changed files with 14 additions and 8 deletions
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19
source/engine/nota.c
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@ -94,7 +94,8 @@ void nota_write_int(long long n, char *nota)
nota[0] = NOTA_INT | sign; nota[0] = NOTA_INT | sign;
nota_continue_num(n, nota, 3); nota = nota_continue_num(n, nota, 3);
*nota = 0;
print_nota_hex(nota); print_nota_hex(nota);
} }
@ -157,6 +158,7 @@ void nota_write_float(double n, char *nota)
nota_continue_num(sig, c, 7); nota_continue_num(sig, c, 7);
printf("float number %g\n", n* (sign ? -1 : 1)); printf("float number %g\n", n* (sign ? -1 : 1));
printf("aka %d x 10^%d\n", sig, e);
print_nota_hex(nota); print_nota_hex(nota);
} }
@ -164,18 +166,21 @@ double nota_read_float(char *nota)
{ {
printf("reading ...\n"); printf("reading ...\n");
print_nota_hex(nota); print_nota_hex(nota);
long long sig; long long sig = 0;
long long e; long long e = 0;
char *c = nota; char *c = nota;
e = *c & NOTA_INT_DATA; /* first three bits */ e = (*c) & NOTA_INT_DATA; /* first three bits */
while (CONTINUE(*(c++))) while (CONTINUE(*c)) {
e = (e<<7) | (*c) & NOTA_DATA; e = (e<<7) | (*c) & NOTA_DATA;
c++; c++;
}
sig = (*c) & NOTA_DATA; sig = (*c) & NOTA_DATA;
while (CONTINUE(*(c++))) while (CONTINUE(*c)) {
sig = (sig<<7) | *c & NOTA_DATA; sig = (sig<<7) | *c & NOTA_DATA;
c++;
}
if (NOTA_SIG_SIGN(*nota)) sig *= -1; if (NOTA_SIG_SIGN(*nota)) sig *= -1;
if (NOTA_EXP_SIGN(*nota)) e *= -1; if (NOTA_EXP_SIGN(*nota)) e *= -1;

1
source/engine/nota.h
View file

@ -13,6 +13,7 @@ int nota_type(char *nota);
void nota_write_int(long long n, char *nota); void nota_write_int(long long n, char *nota);
long long nota_read_int(char *nota); long long nota_read_int(char *nota);
char *nota_read_num(char *nota, long long *n); char *nota_read_num(char *nota, long long *n);
void nota_write_float(double n, char *nota);
double nota_read_float(char *nota); double nota_read_float(char *nota);
void nota_write_bool(int b, char *nota); void nota_write_bool(int b, char *nota);
int nota_read_bool(char *nota); int nota_read_bool(char *nota);