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py/formatfloat: Improve accuracy of float formatting code. #17444

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Merged
merged 2 commits into from
Jul 31, 2025
Merged

py/formatfloat: Improve accuracy of float formatting code. #17444

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e4e1c9f
py/parsenum: Refactor float parsing code.
yoctopuce Jul 4, 2025
dbbaa95
py/formatfloat: Improve accuracy of float formatting code.
yoctopuce Jun 6, 2025
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1 change: 1 addition & 0 deletions ports/esp8266/mpconfigport.h
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Original file line number Diff line number Diff line change
Expand Up @@ -106,6 +106,7 @@
#define MICROPY_PY_OS_URANDOM (1)
#define MICROPY_LONGINT_IMPL (MICROPY_LONGINT_IMPL_MPZ)
#define MICROPY_FLOAT_IMPL (MICROPY_FLOAT_IMPL_FLOAT)
#define MICROPY_FLOAT_FORMAT_IMPL (MICROPY_FLOAT_FORMAT_IMPL_BASIC)
#define MICROPY_WARNINGS (1)
#define MICROPY_PY_STR_BYTES_CMP_WARN (1)
#define MICROPY_STREAMS_POSIX_API (1)
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20 changes: 0 additions & 20 deletions ports/unix/coverage.c
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Expand Up @@ -612,26 +612,6 @@ static mp_obj_t extra_coverage(void) {
mp_emitter_warning(MP_PASS_CODE_SIZE, "test");
}

// format float
{
mp_printf(&mp_plat_print, "# format float\n");

// format with inadequate buffer size
char buf[5];
mp_format_float(1, buf, sizeof(buf), 'g', 0, '+');
mp_printf(&mp_plat_print, "%s\n", buf);

// format with just enough buffer so that precision must be
// set from 0 to 1 twice
char buf2[8];
mp_format_float(1, buf2, sizeof(buf2), 'g', 0, '+');
mp_printf(&mp_plat_print, "%s\n", buf2);

// format where precision is trimmed to avoid buffer overflow
mp_format_float(1, buf2, sizeof(buf2), 'e', 0, '+');
mp_printf(&mp_plat_print, "%s\n", buf2);
}

// binary
{
mp_printf(&mp_plat_print, "# binary\n");
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