Function Index — mpdecimal 2.4.2 documentation
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# Function Index

## Naming Conventions

Most functions are specified as signaling functions, which call the trap handler if a trap-enabled condition occurs. This behavior is not always desirable. For example, if temporary storage has been allocated and an error occurs, it is better to free the storage first and raise the condition at function exit. Another example is a threaded application where many functions use the same context simultaneously.

For each signaling function in the specification, libmpdec offers a quiet, thread-safe counterpart. The naming convention is such that if the signaling function is called `mpd_add`, the quiet function is called `mpd_qadd`.

All signaling functions are wrappers around quiet functions:

    void mpd_qmul(mpd_t *result, const mpd_t *a, const mpd_t *b,
                  const mpd_context_t *ctx, uint32_t *status);

    void
    mpd_mul(mpd_t *result, const mpd_t *a, const mpd_t *b, mpd_context_t *ctx)
    {
            uint32_t status = 0;
            mpd_qmul(result, a, b, ctx, &status);
            mpd_addstatus_raise(ctx, status);
    }

Instead of writing to the context, `mpd_qmul` only updates the status parameter. `mpd_addstatus_raise` adds the accumulated status to the context and calls the trap handler if necessary.

For brevity’s sake, throughout this document only the quiet versions of functions will be explained.

## Thread Safety

Changed in version 2.4: All quiet functions are now thread-safe.

## Quiet Functions

mpd_adjexp | mpd_alloc | mpd_arith_sign
mpd_basiccontext | mpd_calloc | mpd_class
mpd_clear_flags | mpd_cmp_total | mpd_cmp_total_mag
mpd_compare_total | mpd_compare_total_mag | mpd_copy_flags
mpd_defaultcontext | mpd_del | mpd_digits_to_size
mpd_etiny | mpd_etop | mpd_exp_digits
mpd_fprint | mpd_getclamp | mpd_getcr
mpd_getemax | mpd_getemin | mpd_getprec
mpd_getround | mpd_getstatus | mpd_gettraps
mpd_ieee_context | mpd_iscanonical | mpd_isconst_data
mpd_isdynamic | mpd_isdynamic_data | mpd_iseven
mpd_isfinite | mpd_isinfinite | mpd_isinteger
mpd_isnan | mpd_isnegative | mpd_isnormal
mpd_isodd | mpd_isoddcoeff | mpd_isoddword
mpd_ispositive | mpd_isqnan | mpd_isshared_data
mpd_issigned | mpd_issnan | mpd_isspecial
mpd_isstatic | mpd_isstatic_data | mpd_issubnormal
mpd_iszero | mpd_iszerocoeff | mpd_lsd
mpd_lsnprint_flags | mpd_lsnprint_signals | mpd_maxcontext
mpd_minalloc | mpd_msd | mpd_msword
mpd_print | mpd_qabs | mpd_qabs_uint
mpd_qadd | mpd_qadd_i32 | mpd_qadd_i64
mpd_qadd_ssize | mpd_qadd_u32 | mpd_qadd_u64
mpd_qadd_uint | mpd_qand | mpd_qceil
mpd_qcheck_nan | mpd_qcheck_nans | mpd_qcmp
mpd_qcompare | mpd_qcompare_signal | mpd_qcopy
mpd_qcopy_abs | mpd_qcopy_negate | mpd_qcopy_sign
mpd_qdiv | mpd_qdiv_i32 | mpd_qdiv_i64
mpd_qdiv_ssize | mpd_qdiv_u32 | mpd_qdiv_u64
mpd_qdiv_uint | mpd_qdivint | mpd_qdivmod
mpd_qexp | mpd_qexport_u16 | mpd_qexport_u32
mpd_qfinalize | mpd_qfloor | mpd_qfma
mpd_qformat | mpd_qget_i32 | mpd_qget_i64
mpd_qget_ssize | mpd_qget_u32 | mpd_qget_u64
mpd_qget_uint | mpd_qimport_u16 | mpd_qimport_u32
mpd_qinvert | mpd_qinvroot | mpd_qln
mpd_qlog10 | mpd_qlogb | mpd_qmax
mpd_qmax_mag | mpd_qmaxcoeff | mpd_qmin
mpd_qmin_mag | mpd_qminus | mpd_qmul
mpd_qmul_i32 | mpd_qmul_i64 | mpd_qmul_ssize
mpd_qmul_u32 | mpd_qmul_u64 | mpd_qmul_uint
mpd_qncopy | mpd_qnew | mpd_qnew_size
mpd_qnext_minus | mpd_qnext_plus | mpd_qnext_toward
mpd_qor | mpd_qplus | mpd_qpow
mpd_qpowmod | mpd_qquantize | mpd_qreduce
mpd_qrem | mpd_qrem_near | mpd_qrescale
mpd_qresize | mpd_qresize_zero | mpd_qrotate
mpd_qround_to_int | mpd_qround_to_intx | mpd_qscaleb
mpd_qset_i32 | mpd_qset_i64 | mpd_qset_ssize
mpd_qset_string | mpd_qset_u32 | mpd_qset_u64
mpd_qset_uint | mpd_qsetclamp | mpd_qsetcr
mpd_qsetemax | mpd_qsetemin | mpd_qsetprec
mpd_qsetround | mpd_qsetstatus | mpd_qsettraps
mpd_qshift | mpd_qshiftl | mpd_qshiftn
mpd_qshiftr | mpd_qshiftr_inplace | mpd_qsqrt
mpd_qsset_i32 | mpd_qsset_i64 | mpd_qsset_ssize
mpd_qsset_u32 | mpd_qsset_u64 | mpd_qsset_uint
mpd_qsub | mpd_qsub_i32 | mpd_qsub_i64
mpd_qsub_ssize | mpd_qsub_u32 | mpd_qsub_u64
mpd_qsub_uint | mpd_qtrunc | mpd_qxor
mpd_radix | mpd_realloc | mpd_same_quantum
mpd_set_const_data | mpd_set_dynamic | mpd_set_dynamic_data
mpd_set_flags | mpd_set_infinity | mpd_set_negative
mpd_set_positive | mpd_set_qnan | mpd_set_shared_data
mpd_set_sign | mpd_set_snan | mpd_set_static
mpd_set_static_data | mpd_setdigits | mpd_seterror
mpd_setspecial | mpd_sh_alloc | mpd_sign
mpd_signcpy | mpd_sizeinbase | mpd_snprint_flags
mpd_to_eng | mpd_to_eng_size | mpd_to_sci
mpd_to_sci_size | mpd_trail_zeros | mpd_version
mpd_word_digits | mpd_zerocoeff |

## Signaling functions

mpd_abs | mpd_abs_uint | mpd_add
mpd_add_i32 | mpd_add_i64 | mpd_add_ssize
mpd_add_u32 | mpd_add_u64 | mpd_add_uint
mpd_addstatus_raise | mpd_and | mpd_canonical
mpd_ceil | mpd_check_nan | mpd_check_nans
mpd_cmp | mpd_compare | mpd_compare_signal
mpd_copy | mpd_copy_abs | mpd_copy_negate
mpd_copy_sign | mpd_dflt_traphandler | mpd_div
mpd_div_i32 | mpd_div_i64 | mpd_div_ssize
mpd_div_u32 | mpd_div_u64 | mpd_div_uint
mpd_divint | mpd_divmod | mpd_exp
mpd_export_u16 | mpd_export_u32 | mpd_finalize
mpd_floor | mpd_fma | mpd_format
mpd_get_i32 | mpd_get_i64 | mpd_get_ssize
mpd_get_u32 | mpd_get_u64 | mpd_get_uint
mpd_import_u16 | mpd_import_u32 | mpd_init
mpd_invert | mpd_invroot | mpd_ln
mpd_log10 | mpd_logb | mpd_max
mpd_max_mag | mpd_maxcoeff | mpd_min
mpd_min_mag | mpd_minus | mpd_mul
mpd_mul_i32 | mpd_mul_i64 | mpd_mul_ssize
mpd_mul_u32 | mpd_mul_u64 | mpd_mul_uint
mpd_new | mpd_next_minus | mpd_next_plus
mpd_next_toward | mpd_or | mpd_plus
mpd_pow | mpd_powmod | mpd_qsset_uint
mpd_quantize | mpd_reduce | mpd_rem
mpd_rem_near | mpd_rescale | mpd_resize
mpd_resize_zero | mpd_rotate | mpd_round_to_int
mpd_round_to_intx | mpd_scaleb | mpd_set_i32
mpd_set_i64 | mpd_set_ssize | mpd_set_string
mpd_set_u32 | mpd_set_u64 | mpd_set_uint
mpd_setminalloc | mpd_shift | mpd_shiftl
mpd_shiftn | mpd_shiftr | mpd_sqrt
mpd_sset_i32 | mpd_sset_i64 | mpd_sset_ssize
mpd_sset_u32 | mpd_sset_u64 | mpd_sub
mpd_sub_i32 | mpd_sub_i64 | mpd_sub_ssize
mpd_sub_u32 | mpd_sub_u64 | mpd_sub_uint
mpd_trunc | mpd_xor |

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