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Add numeric comparisons for formats, from teo_paul1 at yahoo dot com in

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GitHub issue 2442.
This commit is contained in:
nicm
2020-11-02 08:21:30 +00:00
parent 95841ba16a
commit ac5045a00f
2 changed files with 51 additions and 3 deletions
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42
format.c
View File

@@ -1984,7 +1984,17 @@ format_replace_expression(struct format_modifier *mexp,
int use_fp = 0; int use_fp = 0;
u_int prec = 0; u_int prec = 0;
double mleft, mright, result; double mleft, mright, result;
enum { ADD, SUBTRACT, MULTIPLY, DIVIDE, MODULUS } operator; enum { ADD,
SUBTRACT,
MULTIPLY,
DIVIDE,
MODULUS,
EQUAL,
NOT_EQUAL,
GREATER_THAN,
GREATER_THAN_EQUAL,
LESS_THAN,
LESS_THAN_EQUAL } operator;
if (strcmp(mexp->argv[0], "+") == 0) if (strcmp(mexp->argv[0], "+") == 0)
operator = ADD; operator = ADD;
@@ -1997,6 +2007,18 @@ format_replace_expression(struct format_modifier *mexp,
else if (strcmp(mexp->argv[0], "%") == 0 || else if (strcmp(mexp->argv[0], "%") == 0 ||
strcmp(mexp->argv[0], "m") == 0) strcmp(mexp->argv[0], "m") == 0)
operator = MODULUS; operator = MODULUS;
else if (strcmp(mexp->argv[0], "==") == 0)
operator = EQUAL;
else if (strcmp(mexp->argv[0], "!=") == 0)
operator = NOT_EQUAL;
else if (strcmp(mexp->argv[0], ">") == 0)
operator = GREATER_THAN;
else if (strcmp(mexp->argv[0], "<") == 0)
operator = LESS_THAN;
else if (strcmp(mexp->argv[0], ">=") == 0)
operator = GREATER_THAN_EQUAL;
else if (strcmp(mexp->argv[0], "<=") == 0)
operator = LESS_THAN_EQUAL;
else { else {
format_log(es, "expression has no valid operator: '%s'", format_log(es, "expression has no valid operator: '%s'",
mexp->argv[0]); mexp->argv[0]);
@@ -2059,6 +2081,24 @@ format_replace_expression(struct format_modifier *mexp,
case MODULUS: case MODULUS:
result = fmod(mleft, mright); result = fmod(mleft, mright);
break; break;
case EQUAL:
result = fabs(mleft - mright) < 1e-9;
break;
case NOT_EQUAL:
result = fabs(mleft - mright) > 1e-9;
break;
case GREATER_THAN:
result = (mleft > mright);
break;
case GREATER_THAN_EQUAL:
result = (mleft >= mright);
break;
case LESS_THAN:
result = (mleft < mright);
break;
case LESS_THAN_EQUAL:
result = (mleft > mright);
break;
} }
if (use_fp) if (use_fp)
xasprintf(&value, "%.*f", prec, result); xasprintf(&value, "%.*f", prec, result);

12
tmux.1
View File

@@ -4544,7 +4544,7 @@ multiplication
.Ql * , .Ql * ,
division division
.Ql / , .Ql / ,
and modulus modulus
.Ql m .Ql m
or or
.Ql % .Ql %
@@ -4553,7 +4553,15 @@ or
must be escaped as must be escaped as
.Ql %% .Ql %%
in formats which are also expanded by in formats which are also expanded by
.Xr strftime 3 ) . .Xr strftime 3 )
and numeric comparison operators
.Ql == ,
.Ql != ,
.Ql < ,
.Ql <= ,
.Ql >
and
.Ql >= .
For example, For example,
.Ql #{e|*|f|4:5.5,3} .Ql #{e|*|f|4:5.5,3}
multiplies 5.5 by 3 for a result with four decimal places and multiplies 5.5 by 3 for a result with four decimal places and