Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report
Current view: top level - basemath - FpX.c (source / functions) Hit Total Coverage
Test: PARI/GP v2.18.1 lcov report (development 30851-7844d7b3a5) Lines: 1978 2156 91.7 %
Date: 2026-05-02 09:26:58 Functions: 213 228 93.4 %
Legend: Lines: hit not hit

Function Name Sort by function name Hit count Sort by hit count
FpV_FpM_polint 0
FpX_FpV_multieval 0
FpX_FpXV_multirem 0
FpX_Fp_add_shallow 0
FpX_chinese_coprime 0
FpX_integ 0
FpXn_exp 0
FpXn_sqr 0
FqV_inv 0
Rg_is_FpXk 0
_FpXQ_add 0
_FpX_one 0
_FpX_red 0
_FpX_zero 0
get_FpX_algebra 0
FpXQ_conjvec 8
matJ2_FpXM 8
FpVV_polint_tree 15
FpXQ_charpoly 15
FpV_polint 22
FpX_extresultant_basecase 24
matid2_FpXM 24
FpXQ_autpow_msqr 42
FpX_disc 42
Fq_ispower 70
FpX_extresultant 77
FpX_halfres 106
FpXQM_autsum 147
FpXXk_divexact_i 175
FpX_invLaplace 186
FpXQM_autsum_sqr 217
FpXXk_FpX_div_i 245
FpXM_FpXQV_eval 315
FpXQM_autsum_mul 315
FpXQ_auttrace_sqr 317
FpXQ_auttrace_mul 360
FpXQ_auttrace 434
_FpXQ_easylog 469
FpXk_gcd 490
FpXQ_sqrtl_spec 543
FpXC_FpXQ_eval 588
FpXV_chinese 588
FpXV_chinese_tree 588
FpXV_chinesetree 588
FpXV_invdivexact 588
FpXV_producttree 588
FpXV_sqr 588
FpX_FpXV_multirem_tree 588
gc_chinese 588
FpX_Laplace 597
FpXXk_FpX_div 602
_FpXQ_rand 679
FpX_gcd_check 814
FpXQ_sqrtn_spec 858
FpX_halfgcd 977
FpXXkX_FpXXk_divexact 1008
FpX_convol 1008
Fp_neg_FpX 1025
FpXQ_sumautsum_msqr 1123
FpXXkX_FpXXk_divexact_s 1176
FpXQ_sqrtn 1222
FpXQ_sumautsum 1266
FpXk_mul 1309
FpXC_FpXQV_eval 1470
FpX_invBarrett_Newton 1496
FpXXk_primpart_FpX 1617
FpXXk_rec 1617
FpXQ_transmul_init 1660
FpXQ_autpowers 1736
FpXQ_order 1814
Z_to_FpX 1831
FpXQ_sumautsum_sqr 2264
FpXQ_autsum 2792
get_FpXQ_star 2807
FpXQ_autsum_sqr 2918
FpXXk_divides 2926
FpXQ_autsum_mul 3078
FpXXk_content 3150
_FpXQ_zero 3360
FpX_halfres_update 3749
FpX_invBarrett_basecase 3939
FpX_resultant_basecase 4024
bounded_order 4365
FpXQ_autpow 4461
FpXQ_autpow_sqr 4555
FpXV_FpX_fromdigits 4564
FpXXk_divides_i 4725
FpXXk_content_FpX 5061
FpX_invBarrett 5488
FpXXk_divexact_s 5607
RgXXk_modXn 6027
RgXXk_shift 6027
FpXn_div 6412
FpXn_inv 6412
gener_FpXQ 7030
FpXQ_transmul 7175
FpXT_sqr 7602
FpX_divu 8610
FpXXkX_FpXXk_divides_s 10080
get_FpXQ_algebra 10199
RgXk_var_lowest 10864
FpX_Fp_sub_shallow 11146
FpX_fromNewton 11355
FpX_digits 11403
FpXXk_gcd_i 12817
FpX_extgcd_halfgcd 13757
FpXQ_minpoly 14027
_FpXQ_red 16233
FpX_halfgcd_all_i 16550
FpX_halfgcd_all 16690
FpX_FpXM_qmul 17162
FpXM_mul2 17253
FpXn_expint 17263
FpX_halfres_split 18960
Fp2_norm 18961
Fp2_sqrt 19392
_FpX_add 20062
FpXQ_trace 21068
FpXV_factorback 23258
Fp_red_FpX 24327
Fp_FpX_sub 25671
FpX_matFrobenius 31491
FpV_invVandermonde 31866
FpX_FpV_multieval_tree 31878
FpV_producttree 31881
FpX_FpXV_multirem_dbl_tree 32466
FpXV_producttree_dbl 32468
FpX_halfres_basecase 33802
FpV_inv 34308
_FpX_pow 35493
FpXM_FpX_mul2 36106
FpX_halfres_i 52762
_FpXQ_sub 52941
FpX_gcd_basecase 53064
FpX_integXn 55575
FpXn_mulhigh 59480
FpXk_renormalize 60424
FpX_dotproduct 61210
Rg_to_FpXk 65632
FpXQ_matrix_pow 66289
FpXQ_sqrt 78673
gener_FpXQ_local 84111
gener_FpXQ_i 84145
_FpX_sqr 86660
FpX_addmulmul 87863
FpX_halve 92694
FpV_roots_to_pol 93537
FpX_mulhigh_i 115055
_FpX_divrem 134778
FpXXk_divides_s 136864
FpX_Fp_mul_to_monic 140565
FpX_div_by_X_x 166697
FpX_rescale 178999
FpXn_red 204530
_FpXQ_one 219139
FpX_valrem 254735
random_FpX 257906
FpXV_prod 312023
FpX_center 314339
FpX_powu 318342
FpXQ_norm 363850
_FpX_mul 373808
FpXQ_powers 390229
FpXQ_issquare 401772
FpXV_red 404378
FpX_resultant 417180
RgXV_to_RgM_lg 417528
RgX_blocks_RgM 417536
FpX_FpXQV_eval 418230
FpX_Frobenius 462656
FpX_mulu 479232
FpX_Newton 523690
FpXQ_div 530976
FpXn_recip 534544
Fp_FpXQ_log 544095
FpX_extgcd_basecase 583992
FpX_Fp_sub 588336
FpXQ_powu 608415
FpX_Fp_div 611490
FpX_neg 688979
FpXQ_log 707979
FpX_is_squarefree 716103
FpX_FpXQ_eval 796479
FpX_divrem_Barrett 815446
FpX_divrem_Barrettspec 816193
_FpXQ_pow 826923
FpXQ_pow_Frobenius 842108
FpX_Fp_add 895435
FpX_eval 967988
FpX_shift 985427
FpX_gcd 1037702
FpXQ_inv 1097236
FpXQ_invsafe 1097236
Fp_issquare 1336383
FpX_extgcd 1443509
FpXQ_pow 1566024
FpX_get_red 1625161
Fq_issquare 1631319
FpX_deriv 1634917
FpX_recipspec 1638258
ZX_lgrenormalizespec 1662896
FpXT_red 1664127
FpX_normalize 1857027
to_Flxq 2137569
FpX_center_i 2247436
Fq_log 2478424
FpXn_mul 2564811
_FpXQ_mul 2712720
FpXk_sub 3718568
FpXk_red 4514377
_FpXQ_sqr 5838244
FpX_Fp_mul 6288698
FpX_Fp_mulspec 6303254
FpXQ_sqr 6333860
FpX_sqr 6526635
FpX_mulspec 9203045
FpXQ_mul 13202826
FpX_divrem 14480162
FpX_sub 14577859
FpX_subspec 15394044
FpXQ_red 17709425
FpX_add 18311466
FpX_mul 28483627
to_Flx 44781840
FpX_divrem_basecase 67387152
FpX_rem 73195562
get_FpX_red 87691725
FpX_red 97601554

Generated by: LCOV version 1.16