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:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

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 30605-980f9eb85c) Lines: 1976 2156 91.7 % Date: 2026-01-12 09:21:57 Functions: 213 228 93.4 % Legend: Lines: hit not hit

Function Name	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
FpX_invLaplace	186
FpXQM_autsum_sqr	217
FpXXk_FpX_div_i	238
FpXXk_divexact_i	287
FpXM_FpXQV_eval	315
FpXQM_autsum_mul	315
FpXQ_auttrace_sqr	317
FpXQ_auttrace_mul	360
FpXQ_auttrace	434
_FpXQ_easylog	469
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
FpXXk_FpX_div	588
FpX_FpXV_multirem_tree	588
gc_chinese	588
FpX_Laplace	590
FpXk_gcd	595
_FpXQ_rand	679
FpX_gcd_check	814
FpXQ_sqrtn_spec	858
FpX_halfgcd	977
FpX_convol	994
Fp_neg_FpX	1025
FpXQ_sumautsum_msqr	1123
FpXQ_sqrtn	1222
FpXXkX_FpXXk_divexact	1225
FpXQ_sumautsum	1266
FpXXkX_FpXXk_divexact_s	1449
FpXC_FpXQV_eval	1470
FpX_invBarrett_Newton	1484
FpXk_mul	1603
FpXQ_transmul_init	1660
Z_to_FpX	1726
FpXQ_autpowers	1736
FpXQ_order	1814
FpXXk_primpart_FpX	1904
FpXXk_rec	1904
FpXQ_sumautsum_sqr	2264
FpXQ_autsum	2786
get_FpXQ_star	2807
FpXQ_autsum_sqr	2912
FpXQ_autsum_mul	3072
_FpXQ_zero	3360
FpXXk_divides	3507
FpX_halfres_update	3749
FpX_invBarrett_basecase	3975
FpX_resultant_basecase	3975
FpXXk_content	3983
bounded_order	4324
FpXQ_autpow	4455
FpXQ_autpow_sqr	4549
FpXV_FpX_fromdigits	4564
FpXXk_divides_i	4718
FpX_invBarrett	5512
FpXXk_content_FpX	5789
FpXXk_divexact_s	6097
FpXn_div	6412
FpXn_inv	6412
RgXXk_modXn	6496
RgXXk_shift	6496
gener_FpXQ	7030
FpXQ_transmul	7175
FpXT_sqr	7602
FpX_divu	8610
get_FpXQ_algebra	10199
FpX_Fp_sub_shallow	11146
FpX_fromNewton	11348
FpX_digits	11403
FpXXkX_FpXXk_divides_s	12628
FpX_extgcd_halfgcd	13757
FpXQ_minpoly	14027
FpXXk_gcd_i	14182
RgXk_var_lowest	16142
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	21062
Fp_red_FpX	21944
FpXV_factorback	23258
Fp_FpX_sub	25643
FpX_matFrobenius	31491
FpV_invVandermonde	31837
FpV_producttree	31852
FpX_FpV_multieval_tree	31852
FpX_FpXV_multirem_dbl_tree	32440
FpXV_producttree_dbl	32441
FpX_halfres_basecase	33802
FpV_inv	34280
_FpX_pow	35493
FpXM_FpX_mul2	36106
FpX_halfres_i	52762
_FpXQ_sub	52941
FpX_gcd_basecase	53064
FpX_integXn	55575
_FpXQ_red	59395
FpXn_mulhigh	59480
FpX_dotproduct	61210
FpXQ_matrix_pow	66288
Rg_to_FpXk	71897
FpXk_renormalize	72751
FpXQ_sqrt	78673
gener_FpXQ_local	84110
gener_FpXQ_i	84148
_FpX_sqr	86660
FpX_addmulmul	87863
FpX_halve	92694
FpV_roots_to_pol	93383
FpX_mulhigh_i	115055
_FpX_divrem	134778
FpX_Fp_mul_to_monic	138436
FpXXk_divides_s	141190
FpX_div_by_X_x	166416
FpX_rescale	178983
FpXn_red	204530
_FpXQ_one	219120
FpX_valrem	254681
random_FpX	257999
_FpXQ_pow	282142
FpXQ_pow_Frobenius	297227
FpXV_prod	311880
FpX_center	314074
FpX_powu	318342
FpXQ_norm	363819
_FpX_mul	373003
FpXQ_powers	390130
FpXQ_issquare	401223
FpXV_red	404284
FpX_resultant	416931
RgXV_to_RgM_lg	417334
RgX_blocks_RgM	417342
FpX_FpXQV_eval	418038
FpX_Frobenius	462265
FpX_neg	467291
FpX_Newton	523632
FpXQ_div	533285
FpXn_recip	534487
Fp_FpXQ_log	544095
FpX_extgcd_basecase	587148
FpX_Fp_sub	588208
FpXQ_powu	608276
FpX_Fp_div	614646
FpXQ_log	707980
FpX_is_squarefree	716089
FpX_FpXQ_eval	796359
FpX_divrem_Barrett	815498
FpX_divrem_Barrettspec	816244
FpX_Fp_add	891790
FpX_eval	967194
FpX_shift	985381
FpXQ_pow	1036111
FpX_gcd	1037960
FpX_mulu	1064116
FpX_get_red	1080103
FpXQ_inv	1100348
FpXQ_invsafe	1100348
Fp_issquare	1335844
FpX_extgcd	1443833
_FpXQ_mul	1624129
Fq_issquare	1630801
FpX_deriv	1632787
FpX_recipspec	1638345
ZX_lgrenormalizespec	1662748
FpXT_red	1663744
FpX_normalize	1852804
to_Flxq	2151984
FpX_center_i	2247395
Fq_log	2478409
FpXn_mul	2564811
FpXk_sub	3718554
FpXk_red	4516967
_FpXQ_sqr	5295695
FpX_Fp_mul	5630368
FpX_Fp_mulspec	5644933
FpXQ_sqr	6211231
FpX_sqr	6403923
FpX_mulspec	9202363
FpXQ_mul	11097903
FpX_divrem	14464309
FpX_sub	14616954
FpX_subspec	15433195
FpX_add	16408527
FpXQ_red	17809556
FpX_mul	26439248
to_Flx	44734198
FpX_divrem_basecase	65746997
FpX_rem	71078199
get_FpX_red	85553732
FpX_red	94654661

Generated by: LCOV version 1.16