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 - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30773-2078653b96) Lines: 1467 1530 95.9 % Date: 2026-04-02 09:26:53 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296308
RgX_gtofp_bit	7048117
RgX_normalize1	35705
X2XP1	5991312
ZX_Uspensky	1313953
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15199
ZX_graeffe	5439
ZX_realroots_irred	48570
ZX_rescale2prim	2234126
ZX_sturm	6395
ZX_sturm_i	123067
ZX_sturm_irred	116671
ZX_sturmpart	1128353
ZX_to_ZiX	16493046
ZiX_sqr	99234229
_gen_nored	11203340
_gen_one	14472971
_gen_zero	326016
_intervalcmp	0
_mp_add	24661231
_mp_cmul	34766292
_mp_mul	4374409
_mp_sqr	6298558
_mp_sub	0
_sqrtnr	22593
a_posteriori_errors	537468
abs_update	8020890
abs_update_r	780126
all_roots	536368
append_clone	1616165
bkeval_single_power	5235773
check_ab	1178980
checkbound	2355091
checkvalidpol	267214
clean_roots	536412
cleanroots	231763
cmp_complex_appr	2241481
conformal_basecase	1406486
conformal_mapping	468788
conformal_pol	1406606
dblexp	6562637
dbllog2	304032845
dft	503328
dual_modulus	1014482
eval_rel_pol	13168559
fft	14194213
fft2	7462
findpower	41031606
fix_roots	537472
fix_roots1	398790
fujiwara_bound	2272068
fujiwara_bound_real	1407028
graeffe	49607467
homothetie	1613574
homothetie2n	9979198
homothetie_gauss	36566385
ind_maxlog2	904355
initdft	998266
isexactpol	240103
isexactscalar	934017
isreal	963728
isvalidcoeff	1230445
logmax_modulus	4458758
logmin_modulus	1617741
logmodulus	608226
logpre_modulus	608222
logradius	494932
lower_bound	41031557
mydbllog2i	226882609
mydbllog2r	57614618
mydbllogr	9565137
mygprec	63863776
mygprec_absolute	4344219
mygprec_special	537476
mygprecrc	215581903
mygprecrc_special	2181415
myshiftic	136094917
myshiftrc	35578448
newton_polygon	5520805
optimize_split	494937
parameters	494936
pol_to_gaussint	17627359
polgraeffe	14
polmod_to_embed	84
polrootsbound	27104
polrootsbound_i	27097
polsolve	166708
quicktofp	6981638
realroots	50627
refine_F	503325
refine_H	2464629
root_error	1914414
roots	8368
roots_aux	240131
roots_com	240103
rootsdeg0	42
scalepol	4297444
scalepol2n	0
sol_ok	3378
solve_exact_pol	231495
split_0	495309
split_0_1	469160
split_0_2	469161
split_1	468791
split_2	494934
split_complete	1528085
split_fromU	494937
split_pols	166705
splitcauchy	166713
splitpoleval	5235584
tocomplex	1215880
update_radius	494936
usp	1126201

Generated by: LCOV version 1.16