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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
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@ -1984,7 +1984,17 @@ format_replace_expression(struct format_modifier *mexp,
int use_fp = 0;
u_int prec = 0;
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)
operator = ADD;
@ -1997,6 +2007,18 @@ format_replace_expression(struct format_modifier *mexp,
else if (strcmp(mexp->argv[0], "%") == 0 ||
strcmp(mexp->argv[0], "m") == 0)
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 {
format_log(es, "expression has no valid operator: '%s'",
mexp->argv[0]);
@ -2059,6 +2081,24 @@ format_replace_expression(struct format_modifier *mexp,
case MODULUS:
result = fmod(mleft, mright);
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)
xasprintf(&value, "%.*f", prec, result);