{"abstract":"'12.5' dollars parses as 1205 cents.","category":"Currency rounding and FX conversion","checks":7,"contract":"solve(text, locale, exp): parse a localized amount into integer minor units at exponent exp. Group/decimal separators: en ',' '.', de '.' ',', ch \"'\" '.', fr ' ' or U+202F and ','. An optional leading '-' marks a negative amount (including -0.xx). If grouping is used, the first group has 1-3 digits and every later group exactly 3. A decimal separator must be followed by digits. Fraction digits beyond exp are allowed only if they are zeros, otherwise 'ERR:precision'. Malformed text returns 'ERR:format'; an unknown locale 'ERR:locale'.","evaluation_group":"w2-currency_rounding_and_fx_conversion-locale-amount-parsing","failed_approach":"Padding to a fixed two digits breaks three-decimal currencies.","family":"w2-currency_rounding_and_fx_conversion-locale-amount-parsing-fraction-padding","id":"FA-62111","implementations":{"attempt":{"sha256":"a53a169fd6c68a76b2e50d3351be496304cfa2a98e4717e50f4b47b66b84ddd9","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(text, locale, exp):\n    seps = {'en': (',', '.'), 'de': ('.', ','), 'ch': (\"'\", '.'), 'fr': (' \\u202f', ',')}\n    if locale not in seps: return 'ERR:locale'\n    groups, dec = seps[locale]\n    dig = lambda t: t != '' and all(c in '0123456789' for c in t)\n    s = text.strip()\n    neg = s.startswith('-')\n    if neg: s = s[1:]\n    whole, _, frac = s.partition(dec)\n    for g in groups[1:]: whole = whole.replace(g, groups[0])\n    parts = whole.split(groups[0])\n    if not all(dig(p) for p in parts) or (dec in s and not dig(frac)): return 'ERR:format'\n    if len(parts) > 1 and (len(parts[0]) > 3 or any(len(p) != 3 for p in parts[1:])): return 'ERR:format'\n    if frac[exp:].strip('0'): return 'ERR:precision'\n    frac = frac[:exp].ljust(2, '0')\n    v = int(''.join(parts)) * 10 ** exp + (int(frac) if frac else 0)\n    return -v if neg else v\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncases = [[('regression fraction-padding 1', ('12.5', 'en', 3), 12500),\n  ('regression fraction-padding 2', ('1.234,5', 'de', 2), 123450),\n  ('partial repair guard 2', ('12.05', 'ch', 3), 12050), ('control: english grouping', ('1,234.56', 'en', 2), 123456),\n  ('control: negative below one', ('-0,50', 'de', 2), -50),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450),\n  ('control: excess precision', ('12.345', 'en', 2), 'ERR:precision')],\n [('regression fraction-padding 1', ('12 345,6', 'fr', 2), 1234560),\n  ('regression fraction-padding 2', ('12.05', 'ch', 3), 12050), ('partial repair guard 1', ('999.50', 'ch', 3), 999500),\n  ('partial repair guard 2', ('-999,50', 'fr', 3), -999500),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450),\n  ('control: excess precision', ('12.345', 'en', 2), 'ERR:precision'),\n  ('control: bad grouping', ('1,23,4.00', 'en', 2), 'ERR:format'),\n  ('control: dinar fraction', ('12.5', 'en', 3), 12500)],\n [('regression fraction-padding 1', ('999,1', 'fr', 2), 99910),\n  ('regression fraction-padding 2', ('12,5', 'fr', 2), 1250), ('partial repair guard 1', ('-0.1', 'ch', 3), -100),\n  ('partial repair guard 2', ('12345,5', 'de', 3), 12345500), ('control: dinar fraction', ('12.5', 'en', 3), 12500),\n  ('control: swiss integer', (\"1'000\", 'ch', 0), 1000), ('control: french plain space', ('12 345,6', 'fr', 2), 1234560),\n  ('control: dangling separator', ('12.', 'en', 2), 'ERR:format')],\n [('regression fraction-padding 1', (\"12'345.5\", 'ch', 2), 1234550),\n  ('regression fraction-padding 2', ('12,1', 'de', 2), 1210),\n  ('partial repair guard 1', ('100000,5', 'de', 3), 100000500),\n  ('partial repair guard 2', ('-999,1', 'de', 3), -999100),\n  ('control: dangling separator', ('12.', 'en', 2), 'ERR:format'),\n  ('control: unknown locale', ('12', 'it', 2), 'ERR:locale'),\n  ('control: oversized first group', ('1234,567.00', 'en', 2), 'ERR:format'),\n  ('control: english grouping', ('1,234.56', 'en', 2), 123456)],\n [('regression fraction-padding 1', ('-12.345,1', 'de', 2), -1234510),\n  ('regression fraction-padding 2', ('999.50', 'ch', 3), 999500),\n  ('partial repair guard 1', ('-1000,50', 'de', 3), -1000500),\n  ('partial repair guard 2', ('12.345,50', 'de', 3), 12345500),\n  ('control: english grouping', ('1,234.56', 'en', 2), 123456),\n  ('control: german short fraction', ('1.234,5', 'de', 2), 123450),\n  ('control: negative below one', ('-0,50', 'de', 2), -50),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450)]]\nfor label, args, expected in cases[N - 1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"fb6f2f1dd712dffa35f2d0c5edc28b957f933baace8371d9426e74bc55fcb0f6","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(text, locale, exp):\n    seps = {'en': (',', '.'), 'de': ('.', ','), 'ch': (\"'\", '.'), 'fr': (' \\u202f', ',')}\n    if locale not in seps: return 'ERR:locale'\n    groups, dec = seps[locale]\n    dig = lambda t: t != '' and all(c in '0123456789' for c in t)\n    s = text.strip()\n    neg = s.startswith('-')\n    if neg: s = s[1:]\n    whole, _, frac = s.partition(dec)\n    for g in groups[1:]: whole = whole.replace(g, groups[0])\n    parts = whole.split(groups[0])\n    if not all(dig(p) for p in parts) or (dec in s and not dig(frac)): return 'ERR:format'\n    if len(parts) > 1 and (len(parts[0]) > 3 or any(len(p) != 3 for p in parts[1:])): return 'ERR:format'\n    if frac[exp:].strip('0'): return 'ERR:precision'\n    frac = frac[:exp]\n    v = int(''.join(parts)) * 10 ** exp + (int(frac) if frac else 0)\n    return -v if neg else v\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncases = [[('regression fraction-padding 1', ('12.5', 'en', 3), 12500),\n  ('regression fraction-padding 2', ('1.234,5', 'de', 2), 123450),\n  ('partial repair guard 2', ('12.05', 'ch', 3), 12050), ('control: english grouping', ('1,234.56', 'en', 2), 123456),\n  ('control: negative below one', ('-0,50', 'de', 2), -50),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450),\n  ('control: excess precision', ('12.345', 'en', 2), 'ERR:precision')],\n [('regression fraction-padding 1', ('12 345,6', 'fr', 2), 1234560),\n  ('regression fraction-padding 2', ('12.05', 'ch', 3), 12050), ('partial repair guard 1', ('999.50', 'ch', 3), 999500),\n  ('partial repair guard 2', ('-999,50', 'fr', 3), -999500),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450),\n  ('control: excess precision', ('12.345', 'en', 2), 'ERR:precision'),\n  ('control: bad grouping', ('1,23,4.00', 'en', 2), 'ERR:format'),\n  ('control: dinar fraction', ('12.5', 'en', 3), 12500)],\n [('regression fraction-padding 1', ('999,1', 'fr', 2), 99910),\n  ('regression fraction-padding 2', ('12,5', 'fr', 2), 1250), ('partial repair guard 1', ('-0.1', 'ch', 3), -100),\n  ('partial repair guard 2', ('12345,5', 'de', 3), 12345500), ('control: dinar fraction', ('12.5', 'en', 3), 12500),\n  ('control: swiss integer', (\"1'000\", 'ch', 0), 1000), ('control: french plain space', ('12 345,6', 'fr', 2), 1234560),\n  ('control: dangling separator', ('12.', 'en', 2), 'ERR:format')],\n [('regression fraction-padding 1', (\"12'345.5\", 'ch', 2), 1234550),\n  ('regression fraction-padding 2', ('12,1', 'de', 2), 1210),\n  ('partial repair guard 1', ('100000,5', 'de', 3), 100000500),\n  ('partial repair guard 2', ('-999,1', 'de', 3), -999100),\n  ('control: dangling separator', ('12.', 'en', 2), 'ERR:format'),\n  ('control: unknown locale', ('12', 'it', 2), 'ERR:locale'),\n  ('control: oversized first group', ('1234,567.00', 'en', 2), 'ERR:format'),\n  ('control: english grouping', ('1,234.56', 'en', 2), 123456)],\n [('regression fraction-padding 1', ('-12.345,1', 'de', 2), -1234510),\n  ('regression fraction-padding 2', ('999.50', 'ch', 3), 999500),\n  ('partial repair guard 1', ('-1000,50', 'de', 3), -1000500),\n  ('partial repair guard 2', ('12.345,50', 'de', 3), 12345500),\n  ('control: english grouping', ('1,234.56', 'en', 2), 123456),\n  ('control: german short fraction', ('1.234,5', 'de', 2), 123450),\n  ('control: negative below one', ('-0,50', 'de', 2), -50),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450)]]\nfor label, args, expected in cases[N - 1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"8f0dbdb41542cd89fb4815e995a97d3956de7e716ce89e70bd6bfd3fd8bcacc6","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(text, locale, exp):\n    seps = {'en': (',', '.'), 'de': ('.', ','), 'ch': (\"'\", '.'), 'fr': (' \\u202f', ',')}\n    if locale not in seps: return 'ERR:locale'\n    groups, dec = seps[locale]\n    dig = lambda t: t != '' and all(c in '0123456789' for c in t)\n    s = text.strip()\n    neg = s.startswith('-')\n    if neg: s = s[1:]\n    whole, _, frac = s.partition(dec)\n    for g in groups[1:]: whole = whole.replace(g, groups[0])\n    parts = whole.split(groups[0])\n    if not all(dig(p) for p in parts) or (dec in s and not dig(frac)): return 'ERR:format'\n    if len(parts) > 1 and (len(parts[0]) > 3 or any(len(p) != 3 for p in parts[1:])): return 'ERR:format'\n    if frac[exp:].strip('0'): return 'ERR:precision'\n    frac = frac[:exp].ljust(exp, '0')\n    v = int(''.join(parts)) * 10 ** exp + (int(frac) if frac else 0)\n    return -v if neg else v\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncases = [[('regression fraction-padding 1', ('12.5', 'en', 3), 12500),\n  ('regression fraction-padding 2', ('1.234,5', 'de', 2), 123450),\n  ('partial repair guard 2', ('12.05', 'ch', 3), 12050), ('control: english grouping', ('1,234.56', 'en', 2), 123456),\n  ('control: negative below one', ('-0,50', 'de', 2), -50),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450),\n  ('control: excess precision', ('12.345', 'en', 2), 'ERR:precision')],\n [('regression fraction-padding 1', ('12 345,6', 'fr', 2), 1234560),\n  ('regression fraction-padding 2', ('12.05', 'ch', 3), 12050), ('partial repair guard 1', ('999.50', 'ch', 3), 999500),\n  ('partial repair guard 2', ('-999,50', 'fr', 3), -999500),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450),\n  ('control: excess precision', ('12.345', 'en', 2), 'ERR:precision'),\n  ('control: bad grouping', ('1,23,4.00', 'en', 2), 'ERR:format'),\n  ('control: dinar fraction', ('12.5', 'en', 3), 12500)],\n [('regression fraction-padding 1', ('999,1', 'fr', 2), 99910),\n  ('regression fraction-padding 2', ('12,5', 'fr', 2), 1250), ('partial repair guard 1', ('-0.1', 'ch', 3), -100),\n  ('partial repair guard 2', ('12345,5', 'de', 3), 12345500), ('control: dinar fraction', ('12.5', 'en', 3), 12500),\n  ('control: swiss integer', (\"1'000\", 'ch', 0), 1000), ('control: french plain space', ('12 345,6', 'fr', 2), 1234560),\n  ('control: dangling separator', ('12.', 'en', 2), 'ERR:format')],\n [('regression fraction-padding 1', (\"12'345.5\", 'ch', 2), 1234550),\n  ('regression fraction-padding 2', ('12,1', 'de', 2), 1210),\n  ('partial repair guard 1', ('100000,5', 'de', 3), 100000500),\n  ('partial repair guard 2', ('-999,1', 'de', 3), -999100),\n  ('control: dangling separator', ('12.', 'en', 2), 'ERR:format'),\n  ('control: unknown locale', ('12', 'it', 2), 'ERR:locale'),\n  ('control: oversized first group', ('1234,567.00', 'en', 2), 'ERR:format'),\n  ('control: english grouping', ('1,234.56', 'en', 2), 123456)],\n [('regression fraction-padding 1', ('-12.345,1', 'de', 2), -1234510),\n  ('regression fraction-padding 2', ('999.50', 'ch', 3), 999500),\n  ('partial repair guard 1', ('-1000,50', 'de', 3), -1000500),\n  ('partial repair guard 2', ('12.345,50', 'de', 3), 12345500),\n  ('control: english grouping', ('1,234.56', 'en', 2), 123456),\n  ('control: german short fraction', ('1.234,5', 'de', 2), 123450),\n  ('control: negative below one', ('-0,50', 'de', 2), -50),\n  ('control: narrow space with trailing zero', ('1\\u202f234,500', 'fr', 2), 123450)]]\nfor label, args, expected in cases[N - 1]:\n    check(label, solve(*args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic, bounded teaching model with a stipulated toy contract; it makes no claim of conformance to any real regulation, standard, or institution's rules. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-currency_rounding_and_fx_conversion-locale-amount-parsing-fraction-padding","generated_at":"2026-09-29T14:47:01.504789+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Currency amounts must be rounded at the right stage and in the right unit, or ledgers, quotes and settlements drift by minor units.","repair":"Right-pad the fraction with zeros to exactly exp digits.","root_cause":"The fraction digits are converted directly to an integer without padding to the exponent.","sha256":"ab611472cb9d884047a0a595de7ebe881551f253c6a8c7d5d6c31b36ea9926d9","title":"A short fraction is read as minor units without right-padding · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":42.724,"exit_code":1,"observations":[{"actual":12050,"check":"regression fraction-padding 1","expected":12500,"passed":false},{"actual":123450,"check":"regression fraction-padding 2","expected":123450,"passed":true},{"actual":12005,"check":"partial repair guard 2","expected":12050,"passed":false},{"actual":123456,"check":"control: english grouping","expected":123456,"passed":true},{"actual":-50,"check":"control: negative below one","expected":-50,"passed":true},{"actual":123450,"check":"control: narrow space with trailing zero","expected":123450,"passed":true},{"actual":"ERR:precision","check":"control: excess precision","expected":"ERR:precision","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression fraction-padding 1\", \"actual\": 12050, \"expected\": 12500, \"passed\": false}, {\"check\": \"regression fraction-padding 2\", \"actual\": 123450, \"expected\": 123450, \"passed\": true}, {\"check\": \"partial repair guard 2\", \"actual\": 12005, \"expected\": 12050, \"passed\": false}, {\"check\": \"control: english grouping\", \"actual\": 123456, \"expected\": 123456, \"passed\": true}, {\"check\": \"control: negative below one\", \"actual\": -50, \"expected\": -50, \"passed\": true}, {\"check\": \"control: narrow space with trailing zero\", \"actual\": 123450, \"expected\": 123450, \"passed\": true}, {\"check\": \"control: excess precision\", \"actual\": \"ERR:precision\", \"expected\": \"ERR:precision\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":38.699,"exit_code":1,"observations":[{"actual":12005,"check":"regression fraction-padding 1","expected":12500,"passed":false},{"actual":123405,"check":"regression fraction-padding 2","expected":123450,"passed":false},{"actual":12005,"check":"partial repair guard 2","expected":12050,"passed":false},{"actual":123456,"check":"control: english grouping","expected":123456,"passed":true},{"actual":-50,"check":"control: negative below one","expected":-50,"passed":true},{"actual":123450,"check":"control: narrow space with trailing zero","expected":123450,"passed":true},{"actual":"ERR:precision","check":"control: excess precision","expected":"ERR:precision","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression fraction-padding 1\", \"actual\": 12005, \"expected\": 12500, \"passed\": false}, {\"check\": \"regression fraction-padding 2\", \"actual\": 123405, \"expected\": 123450, \"passed\": false}, {\"check\": \"partial repair guard 2\", \"actual\": 12005, \"expected\": 12050, \"passed\": false}, {\"check\": \"control: english grouping\", \"actual\": 123456, \"expected\": 123456, \"passed\": true}, {\"check\": \"control: negative below one\", \"actual\": -50, \"expected\": -50, \"passed\": true}, {\"check\": \"control: narrow space with trailing zero\", \"actual\": 123450, \"expected\": 123450, \"passed\": true}, {\"check\": \"control: excess precision\", \"actual\": \"ERR:precision\", \"expected\": \"ERR:precision\", \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":42.761,"exit_code":0,"observations":[{"actual":12500,"check":"regression fraction-padding 1","expected":12500,"passed":true},{"actual":123450,"check":"regression fraction-padding 2","expected":123450,"passed":true},{"actual":12050,"check":"partial repair guard 2","expected":12050,"passed":true},{"actual":123456,"check":"control: english grouping","expected":123456,"passed":true},{"actual":-50,"check":"control: negative below one","expected":-50,"passed":true},{"actual":123450,"check":"control: narrow space with trailing zero","expected":123450,"passed":true},{"actual":"ERR:precision","check":"control: excess precision","expected":"ERR:precision","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression fraction-padding 1\", \"actual\": 12500, \"expected\": 12500, \"passed\": true}, {\"check\": \"regression fraction-padding 2\", \"actual\": 123450, \"expected\": 123450, \"passed\": true}, {\"check\": \"partial repair guard 2\", \"actual\": 12050, \"expected\": 12050, \"passed\": true}, {\"check\": \"control: english grouping\", \"actual\": 123456, \"expected\": 123456, \"passed\": true}, {\"check\": \"control: negative below one\", \"actual\": -50, \"expected\": -50, \"passed\": true}, {\"check\": \"control: narrow space with trailing zero\", \"actual\": 123450, \"expected\": 123450, \"passed\": true}, {\"check\": \"control: excess precision\", \"actual\": \"ERR:precision\", \"expected\": \"ERR:precision\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}