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) Coverage Total Hit Test: PARI/GP v2.19.0 lcov report (development 31092-e6893b0017) Lines: 94.1 % 1561 1469 Test Date: 2026-08-15 17:02:54 Functions: 96.7 % 121 117 Legend: Lines:     hit not hit

Function Name	Hit count
_intervalcmp	0
_mp_sub	0
polgraeffe	0
scalepol2n	0
RgX_Graeffe	14
ZX_Uspensky_equal_yes	14
polgraeffe0	14
ZX_Uspensky_no	21
ZX_Uspensky_equal	28
rootsdeg0	42
FFT	56
FFTinv	56
polmod_to_embed	84
FFT_i	98
sol_ok	3378
ZX_graeffe	5460
ZX_sturm	6395
fft2	7462
roots	8382
ZX_deg1root	15274
_sqrtnr	22877
polrootsbound_i	27798
polrootsbound	27805
RgX_normalize1	36406
ZX_realroots_irred	48669
realroots	50631
ZX_sturm_irred	117167
ZX_sturm_i	123562
polsolve	166990
split_pols	166990
splitcauchy	166990
solve_exact_pol	231621
cleanroots	231875
isexactpol	240229
roots_com	240229
roots_aux	240257
checkvalidpol	268041
QX_complex_roots	297213
_gen_zero	326083
fix_roots1	398951
conformal_mapping	469139
split_1	469139
split_0_1	469511
split_0_2	469511
logradius	495272
optimize_split	495272
parameters	495272
split_2	495272
split_fromU	495272
update_radius	495272
split_0	495644
dft	503714
refine_F	503714
all_roots	537400
clean_roots	537442
a_posteriori_errors	538501
fix_roots	538501
mygprec_special	538501
logmodulus	608819
logpre_modulus	608819
abs_update_r	781146
ind_maxlog2	904894
isexactscalar	934563
isreal	964411
initdft	998986
dual_modulus	1015239
usp	1127907
ZX_sturmpart	1129013
check_ab	1179644
tocomplex	1219401
isvalidcoeff	1235239
ZX_Uspensky	1315114
conformal_basecase	1407536
conformal_pol	1407655
fujiwara_bound_real	1408223
split_complete	1529789
homothetie	1614925
logmin_modulus	1618166
append_clone	1618806
root_error	1919285
mygprecrc_special	2185077
ZX_rescale2prim	2237645
cmp_complex_appr	2249837
fujiwara_bound	2276732
checkbound	2356418
refine_H	2466368
scalepol	4300650
mygprec_absolute	4356172
_mp_mul	4430508
logmax_modulus	4461174
bkeval_single_power	5250403
splitpoleval	5250403
newton_polygon	5526578
X2XP1	6000985
_mp_sqr	6349893
dblexp	6569365
quicktofp	6999987
RgX_gtofp_bit	7055959
abs_update	8028428
mydbllogr	9574101
homothetie2n	9987752
_gen_nored	11268048
eval_rel_pol	13181301
fft	14225418
_gen_one	14524760
ZX_to_ZiX	16457040
pol_to_gaussint	17642475
_mp_add	24942127
_mp_cmul	35116850
myshiftrc	35615503
homothetie_gauss	36603117
findpower	41064291
lower_bound	41064291
graeffe	49674073
mydbllog2r	58108229
mygprec	63981693
ZiX_sqr	99348146
myshiftic	136510677
mygprecrc	215744948
mydbllog2i	227084546
dbllog2	304780267

Generated by: LCOV version 2.0-1