From 4aa2b717f9e050783b567540d9bb0193d692e3e9 Mon Sep 17 00:00:00 2001 From: Robin Haberkorn Date: Sat, 31 Oct 2026 13:46:11 +0100 Subject: support floating point numbers * Extends the SciTECO type system. A number on the expression stack or in a Q-register can be either an integer or a float. * Floating point constants begin with a digit (like all other numbers), are followed by a `.` and an optional fractional part. Exponents cannot currently be written. E.g. `1.` == `1.0`. But `.0` would still be `.,0`. (!) To push an integer followed by dot, you must now write e.g. `1,.` or `1 .`. * All of the basic arithmetic operators operate like this: If both operands are integers, the result is also an integer (integer arithmetics). If at least one of the operands is a float, the result is also a float (float arithmetics). * All of the binary operators (AND, OR, XOR) always cast all operands to integer and the result is always an integer as well. * You can "cast" integers to float by `*1.` or `/1.`. You can "cast" floats to integers using `#0`. * Most commands still accept only integers. Floats are implicitly casted to integers. Float-aware commands are: =, \, ^W, Qq, Uq, %q and the conditionals. * `%q` will not change the current type of register q. * Numeric part of "lexer.font" is now a float (in points). * You cannot currently print octal and hexadecimal floats. `==` and `===` are identical to `=` on floats. * `===` is now printing hex integers in lower case. This is because SciTECO's coding style for hex constants is also lower case. * `--with-teco-integer` renamed to `--with-teco-number`. --- src/undo.c | 1 + 1 file changed, 1 insertion(+) (limited to 'src/undo.c') diff --git a/src/undo.c b/src/undo.c index 18f90c5..ab103a1 100644 --- a/src/undo.c +++ b/src/undo.c @@ -36,6 +36,7 @@ TECO_DEFINE_UNDO_SCALAR(guint); TECO_DEFINE_UNDO_SCALAR(gsize); TECO_DEFINE_UNDO_SCALAR(gssize); TECO_DEFINE_UNDO_SCALAR(teco_int_t); +TECO_DEFINE_UNDO_SCALAR(teco_number_t); TECO_DEFINE_UNDO_SCALAR(gboolean); TECO_DEFINE_UNDO_SCALAR(gconstpointer); -- cgit v1.2.3