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 30550-07450a7a86) Lines: 1467 1530 95.9 % Date: 2025-11-18 09:22:37 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296411
RgX_gtofp_bit	7031477
RgX_normalize1	35901
X2XP1	5990253
ZX_Uspensky	1313880
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15275
ZX_graeffe	5390
ZX_realroots_irred	48654
ZX_rescale2prim	2233694
ZX_sturm	6395
ZX_sturm_i	123169
ZX_sturm_irred	116774
ZX_sturmpart	1128239
ZX_to_ZiX	16460627
ZiX_sqr	99041169
_gen_nored	11201065
_gen_one	14473411
_gen_zero	326151
_intervalcmp	0
_mp_add	24660757
_mp_cmul	34762979
_mp_mul	4374496
_mp_sqr	6298393
_mp_sub	0
_sqrtnr	22710
a_posteriori_errors	537224
abs_update	8005458
abs_update_r	778639
all_roots	536121
append_clone	1614168
bkeval_single_power	5236053
check_ab	1178866
checkbound	2354862
checkvalidpol	267060
clean_roots	536164
cleanroots	231763
cmp_complex_appr	2238546
conformal_basecase	1403900
conformal_mapping	467927
conformal_pol	1404019
dblexp	6549092
dbllog2	302090698
dft	502365
dual_modulus	1012467
eval_rel_pol	13138232
fft	14159207
fft2	7462
findpower	40958878
fix_roots	537224
fix_roots1	398464
fujiwara_bound	2271764
fujiwara_bound_real	1406899
graeffe	49507915
homothetie	1610097
homothetie2n	9957678
homothetie_gauss	36499741
ind_maxlog2	902683
initdft	996340
isexactpol	239753
isexactscalar	931714
isreal	961905
isvalidcoeff	1230235
logmax_modulus	4450983
logmin_modulus	1614831
logmodulus	606746
logpre_modulus	606743
logradius	493975
lower_bound	40957024
mydbllog2i	226430035
mydbllog2r	56183320
mydbllogr	9547013
mygprec	63758861
mygprec_absolute	4339935
mygprec_special	537227
mygprecrc	215201240
mygprecrc_special	2179171
myshiftic	135806992
myshiftrc	35506729
newton_polygon	5507109
optimize_split	493978
parameters	493976
pol_to_gaussint	17589134
polgraeffe	14
polmod_to_embed	84
polrootsbound	27300
polrootsbound_i	27293
polsolve	166718
quicktofp	6979053
realroots	50627
refine_F	502365
refine_H	2460488
root_error	1912561
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4289420
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494339
split_0_1	468292
split_0_2	468292
split_1	467930
split_2	493978
split_complete	1525896
split_fromU	493978
split_pols	166717
splitcauchy	166727
splitpoleval	5235865
tocomplex	1213943
update_radius	493977
usp	1126035

Generated by: LCOV version 1.16